121201231013231 has 16 divisors (see below), whose sum is σ = 121992079609440. Its totient is φ = 120410969333760.

The previous prime is 121201231013207. The next prime is 121201231013251. The reversal of 121201231013231 is 132310132102121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121201231013231 - 2³⁴ = 121184051144047 is a prime.

It is a super-2 number, since 2×121201231013231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121201231013197 and 121201231013206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201231013251) 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, 6670761515 + ... + 6670779683.

It is an arithmetic number, because the mean of its divisors is an integer number (7624504975590).

Almost surely, 2^{121201231013231} is an apocalyptic number.

121201231013231 is a deficient number, since it is larger than the sum of its proper divisors (790848596209).

121201231013231 is a wasteful number, since it uses less digits than its factorization.

121201231013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31946.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 121201231013231 its reverse (132310132102121), we get a palindrome (253511363115352).

The spelling of 121201231013231 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred thirty-one million, thirteen thousand, two hundred thirty-one".