211031021022 has 16 divisors (see below), whose sum is σ = 423147039120. Its totient is φ = 70162840832.

The previous prime is 211031020999. The next prime is 211031021023. The reversal of 211031021022 is 220120130112.

It is a junction number, because it is equal to n+sod(n) for n = 211031020992 and 211031021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211031021023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45205683 + ... + 45210350.

It is an arithmetic number, because the mean of its divisors is an integer number (26446689945).

Almost surely, 2^211031021022 is an apocalyptic number.

211031021022 is an abundant number, since it is smaller than the sum of its proper divisors (212116018098).

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

211031021022 is a wasteful number, since it uses less digits than its factorization.

211031021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90416427.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 211031021022 its reverse (220120130112), we get a palindrome (431151151134).

The spelling of 211031021022 in words is "two hundred eleven billion, thirty-one million, twenty-one thousand, twenty-two".