211031123022 has 24 divisors (see below), whose sum is σ = 460834373376. Its totient is φ = 69789819456.

The previous prime is 211031123003. The next prime is 211031123063. The reversal of 211031123022 is 220321130112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211031122986 and 211031123004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46155003 + ... + 46159574.

It is an arithmetic number, because the mean of its divisors is an integer number (19201432224).

Almost surely, 2^211031123022 is an apocalyptic number.

211031123022 is an abundant number, since it is smaller than the sum of its proper divisors (249803250354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211031123022 is a wasteful number, since it uses less digits than its factorization.

211031123022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92314712 (or 92314709 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 211031123022 its reverse (220321130112), we get a palindrome (431352253134).

The spelling of 211031123022 in words is "two hundred eleven billion, thirty-one million, one hundred twenty-three thousand, twenty-two".