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BaseRepresentation
bin11101110101001110100101…
…011110000011101111110101
3122012112201002011210122210212
4131311032211132003233311
5114144044414340024341
61143012550025555205
736430653416201030
oct3565164536035765
9565481064718725
10131201142111221
1138894101351396
121286b7b1045b05
1358292a3676340
142458252268017
151027c996875eb
hex7753a5783bf5

131201142111221 has 8 divisors (see below), whose sum is σ = 161478328752384. Its totient is φ = 103807497054960.

The previous prime is 131201142111181. The next prime is 131201142111241. The reversal of 131201142111221 is 122111241102131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131201142111221 - 222 = 131201137916917 is a prime.

It is a super-2 number, since 2×1312011421112212 (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201142111241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 720885396125 + ... + 720885396306.

It is an arithmetic number, because the mean of its divisors is an integer number (20184791094048).

Almost surely, 2131201142111221 is an apocalyptic number.

It is an amenable number.

131201142111221 is a deficient number, since it is larger than the sum of its proper divisors (30277186641163).

131201142111221 is a wasteful number, since it uses less digits than its factorization.

131201142111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441770792451.

The product of its (nonzero) digits is 192, while the sum is 23.

Adding to 131201142111221 its reverse (122111241102131), we get a palindrome (253312383213352).

The spelling of 131201142111221 in words is "one hundred thirty-one trillion, two hundred one billion, one hundred forty-two million, one hundred eleven thousand, two hundred twenty-one".