210101122220 has 48 divisors (see below), whose sum is σ = 484275552768. Its totient is φ = 75931680960.

The previous prime is 210101122193. The next prime is 210101122229. The reversal of 210101122220 is 22221101012.

It is a junction number, because it is equal to n+sod(n) for n = 210101122195 and 210101122204.

It is not an unprimeable number, because it can be changed into a prime (210101122229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2893604 + ... + 2965323.

It is an arithmetic number, because the mean of its divisors is an integer number (10089074016).

Almost surely, 2^210101122220 is an apocalyptic number.

210101122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210101122220 is an abundant number, since it is smaller than the sum of its proper divisors (274174430548).

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

210101122220 is a wasteful number, since it uses less digits than its factorization.

210101122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5859110 (or 5859108 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210101122220 its reverse (22221101012), we get a palindrome (232322223232).

The spelling of 210101122220 in words is "two hundred ten billion, one hundred one million, one hundred twenty-two thousand, two hundred twenty".