120131212222121 has 16 divisors (see below), whose sum is σ = 121287751972800. Its totient is φ = 118979185912128.

The previous prime is 120131212222069. The next prime is 120131212222139. The reversal of 120131212222121 is 121222212131021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120131212222121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120131212222421) 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, 97644026 + ... + 98866668.

It is an arithmetic number, because the mean of its divisors is an integer number (7580484498300).

Almost surely, 2^{120131212222121} is an apocalyptic number.

It is an amenable number.

120131212222121 is a deficient number, since it is larger than the sum of its proper divisors (1156539750679).

120131212222121 is a wasteful number, since it uses less digits than its factorization.

120131212222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224488.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 120131212222121 its reverse (121222212131021), we get a palindrome (241353424353142).

The spelling of 120131212222121 in words is "one hundred twenty trillion, one hundred thirty-one billion, two hundred twelve million, two hundred twenty-two thousand, one hundred twenty-one".