131011012121 has 16 divisors (see below), whose sum is σ = 145980334080. Its totient is φ = 116552200080.

The previous prime is 131011012109. The next prime is 131011012123. The reversal of 131011012121 is 121210110131.

It is a cyclic number.

It is not a de Polignac number, because 131011012121 - 2²⁶ = 130943903257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131011012096 and 131011012105.

It is not an unprimeable number, because it can be changed into a prime (131011012123) 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, 7880600 + ... + 7897206.

It is an arithmetic number, because the mean of its divisors is an integer number (9123770880).

Almost surely, 2^131011012121 is an apocalyptic number.

131011012121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131011012121 is a deficient number, since it is larger than the sum of its proper divisors (14969321959).

131011012121 is a wasteful number, since it uses less digits than its factorization.

131011012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31924.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 131011012121 its reverse (121210110131), we get a palindrome (252221122252).

It can be divided in two parts, 1310110 and 12121, that added together give a palindrome (1322231).

The spelling of 131011012121 in words is "one hundred thirty-one billion, eleven million, twelve thousand, one hundred twenty-one".