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13121220210011 = 191634297985979
BaseRepresentation
bin1011111011110000010110…
…1010110110110101011011
31201110101011101201020020022
42332330011222312311123
53204434224333210021
643523445542221055
72522656032364364
oct276740552666533
951411141636208
1013121220210011
1141a9750814741
12157ab9212478b
137424308c1b34
143350db43cb6b
1517b4a681b1ab
hexbef05ab6d5b

13121220210011 has 16 divisors (see below), whose sum is σ = 13899793891200. Its totient is φ = 12351480499008.

The previous prime is 13121220209957. The next prime is 13121220210121. The reversal of 13121220210011 is 11001202212131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13121220210011 - 234 = 13104040340827 is a prime.

It is a super-2 number, since 2×131212202100112 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121220510011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12814820 + ... + 13800798.

It is an arithmetic number, because the mean of its divisors is an integer number (868737118200).

Almost surely, 213121220210011 is an apocalyptic number.

13121220210011 is a deficient number, since it is larger than the sum of its proper divisors (778573681189).

13121220210011 is a wasteful number, since it uses less digits than its factorization.

13121220210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990458.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 13121220210011 its reverse (11001202212131), we get a palindrome (24122422422142).

The spelling of 13121220210011 in words is "thirteen trillion, one hundred twenty-one billion, two hundred twenty million, two hundred ten thousand, eleven".

Divisors: 1 19 163 3097 4297 81643 700411 985979 13307809 18733601 160714577 3053576963 4236751763 80498283497 690590537369 13121220210011