211012221120210 has 48 divisors (see below), whose sum is σ = 549254512661400. Its totient is φ = 56206055093760.

The previous prime is 211012221120163. The next prime is 211012221120271. The reversal of 211012221120210 is 12021122210112.

211012221120210 is a `hidden beast` number, since 2 + 110 + 1 + 2 + 221 + 120 + 210 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 86344925086809 + 124667296033401 = 9292197^2 + 11165451^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1330556485 + ... + 1330715064.

Almost surely, 2^{211012221120210} is an apocalyptic number.

211012221120210 is an abundant number, since it is smaller than the sum of its proper divisors (338242291541190).

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

211012221120210 is a wasteful number, since it uses less digits than its factorization.

211012221120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661272443 (or 2661272440 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211012221120210 its reverse (12021122210112), we get a palindrome (223033343330322).

The spelling of 211012221120210 in words is "two hundred eleven trillion, twelve billion, two hundred twenty-one million, one hundred twenty thousand, two hundred ten".