121201013031 has 16 divisors (see below), whose sum is σ = 184692121344. Its totient is φ = 69255897984.

The previous prime is 121201012943. The next prime is 121201013039. The reversal of 121201013031 is 130310102121.

It is a happy number.

It is not a de Polignac number, because 121201013031 - 2⁷ = 121201012903 is a prime.

It is a super-2 number, since 2×121201013031² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121201013031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201013039) 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, 1520536 + ... + 1598258.

It is an arithmetic number, because the mean of its divisors is an integer number (11543257584).

Almost surely, 2^121201013031 is an apocalyptic number.

121201013031 is a deficient number, since it is larger than the sum of its proper divisors (63491108313).

121201013031 is an equidigital number, since it uses as much as digits as its factorization.

121201013031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151990.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 121201013031 its reverse (130310102121), we get a palindrome (251511115152).

The spelling of 121201013031 in words is "one hundred twenty-one billion, two hundred one million, thirteen thousand, thirty-one".