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11220202012121 = 315348714022781
BaseRepresentation
bin1010001101000110100000…
…1001111011110111011001
31110201122022011120220120222
42203101220021323313121
52432312433203341441
635510253432525425
72235430031332004
oct243215011736731
943648264526528
1011220202012121
1136365085868a3
121312672b50875
136350a2c2ac4b
142ab0bc6c653b
15146ce349ed4b
hexa346827bdd9

11220202012121 has 16 divisors (see below), whose sum is σ = 11824907240448. Its totient is φ = 10631510884800.

The previous prime is 11220202012079. The next prime is 11220202012127. The reversal of 11220202012121 is 12121020202211.

It is a cyclic number.

It is not a de Polignac number, because 11220202012121 - 210 = 11220202011097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11220202012121.

It is not an unprimeable number, because it can be changed into a prime (11220202012127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6211250 + ... + 7811531.

It is an arithmetic number, because the mean of its divisors is an integer number (739056702528).

Almost surely, 211220202012121 is an apocalyptic number.

It is an amenable number.

11220202012121 is a deficient number, since it is larger than the sum of its proper divisors (604705228327).

11220202012121 is a wasteful number, since it uses less digits than its factorization.

11220202012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14023352.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11220202012121 its reverse (12121020202211), we get a palindrome (23341222214332).

The spelling of 11220202012121 in words is "eleven trillion, two hundred twenty billion, two hundred two million, twelve thousand, one hundred twenty-one".

Divisors: 1 31 53 487 1643 15097 25811 800141 14022781 434706211 743207393 6829094347 23039429183 211701924757 361942000391 11220202012121