131010201212121 has 64 divisors (see below), whose sum is σ = 245296136970240. Its totient is φ = 67124956245120.

The previous prime is 131010201212117. The next prime is 131010201212179. The reversal of 131010201212121 is 121212102010131.

It is a happy number.

131010201212121 is a `hidden beast` number, since 1 + 310 + 1 + 0 + 20 + 1 + 212 + 121 = 666.

It is not a de Polignac number, because 131010201212121 - 2² = 131010201212117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131010201212094 and 131010201212103.

It is not an unprimeable number, because it can be changed into a prime (131010203212121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 431464465 + ... + 431767998.

It is an arithmetic number, because the mean of its divisors is an integer number (3832752140160).

Almost surely, 2^{131010201212121} is an apocalyptic number.

131010201212121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131010201212121 is a deficient number, since it is larger than the sum of its proper divisors (114285935758119).

131010201212121 is a wasteful number, since it uses less digits than its factorization.

131010201212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863232563 (or 863232557 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 131010201212121 its reverse (121212102010131), we get a palindrome (252222303222252).

The spelling of 131010201212121 in words is "one hundred thirty-one trillion, ten billion, two hundred one million, two hundred twelve thousand, one hundred twenty-one".