211121123130131 has 4 divisors (see below), whose sum is σ = 211267836907200. Its totient is φ = 210974409353064.

The previous prime is 211121123130023. The next prime is 211121123130161. The reversal of 211121123130131 is 131031321121112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211121123130131 is a prime.

It is a super-2 number, since 2×211121123130131² (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 = 211121123130097 and 211121123130106.

It is not an unprimeable number, because it can be changed into a prime (211121123130161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73356886376 + ... + 73356889253.

It is an arithmetic number, because the mean of its divisors is an integer number (52816959226800).

Almost surely, 2^{211121123130131} is an apocalyptic number.

211121123130131 is a deficient number, since it is larger than the sum of its proper divisors (146713777069).

211121123130131 is a wasteful number, since it uses less digits than its factorization.

211121123130131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146713777068.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 211121123130131 its reverse (131031321121112), we get a palindrome (342152444251243).

The spelling of 211121123130131 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred twenty-three million, one hundred thirty thousand, one hundred thirty-one".