210101122112220 has 144 divisors (see below), whose sum is σ = 671494876416000. Its totient is φ = 53027091490176.

The previous prime is 210101122112191. The next prime is 210101122112227. The reversal of 210101122112220 is 22211221101012.

210101122112220 is a `hidden beast` number, since 210 + 1 + 0 + 1 + 1 + 221 + 12 + 220 = 666.

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 = 210101122112193 and 210101122112202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210101122112227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26010180 + ... + 33116939.

It is an arithmetic number, because the mean of its divisors is an integer number (4663158864000).

Almost surely, 2^{210101122112220} is an apocalyptic number.

210101122112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210101122112220 is an abundant number, since it is smaller than the sum of its proper divisors (461393754303780).

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

210101122112220 is a wasteful number, since it uses less digits than its factorization.

210101122112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59128192 (or 59128187 counting only the distinct ones).

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

Adding to 210101122112220 its reverse (22211221101012), we get a palindrome (232312343213232).

The spelling of 210101122112220 in words is "two hundred ten trillion, one hundred one billion, one hundred twenty-two million, one hundred twelve thousand, two hundred twenty".