211204122031 has 16 divisors (see below), whose sum is σ = 242453932864. Its totient is φ = 180225368064.

The previous prime is 211204122029. The next prime is 211204122049. The reversal of 211204122031 is 130221402112.

It is not a de Polignac number, because 211204122031 - 2¹ = 211204122029 is a prime.

It is a super-2 number, since 2×211204122031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211204122061) 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, 1521091 + ... + 1654123.

It is an arithmetic number, because the mean of its divisors is an integer number (15153370804).

Almost surely, 2^211204122031 is an apocalyptic number.

211204122031 is a deficient number, since it is larger than the sum of its proper divisors (31249810833).

211204122031 is a wasteful number, since it uses less digits than its factorization.

211204122031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134050.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 211204122031 its reverse (130221402112), we get a palindrome (341425524143).

The spelling of 211204122031 in words is "two hundred eleven billion, two hundred four million, one hundred twenty-two thousand, thirty-one".