211122220121010 has 96 divisors (see below), whose sum is σ = 598823440667712. Its totient is φ = 51180797888640.

The previous prime is 211122220121003. The next prime is 211122220121051. The reversal of 211122220121010 is 10121022221112.

211122220121010 is a `hidden beast` number, since 21 + 1 + 1 + 222 + 201 + 210 + 10 = 666.

211122220121010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 47 ways as a sum of consecutive naturals, for example, 164797852 + ... + 166074008.

It is an arithmetic number, because the mean of its divisors is an integer number (6237744173622).

Almost surely, 2^{211122220121010} is an apocalyptic number.

211122220121010 is an abundant number, since it is smaller than the sum of its proper divisors (387701220546702).

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

211122220121010 is a wasteful number, since it uses less digits than its factorization.

211122220121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443288 (or 1443285 counting only the distinct ones).

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

Adding to 211122220121010 its reverse (10121022221112), we get a palindrome (221243242342122).

The spelling of 211122220121010 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, ten".