210100220121020 has 24 divisors (see below), whose sum is σ = 445494058979424. Its totient is φ = 83224164862656.

The previous prime is 210100220120977. The next prime is 210100220121031. The reversal of 210100220121020 is 20121022001012.

It is a junction number, because it is equal to n+sod(n) for n = 210100220120986 and 210100220121004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50995196999 + ... + 50995201118.

It is an arithmetic number, because the mean of its divisors is an integer number (18562252457476).

Almost surely, 2^{210100220121020} is an apocalyptic number.

210100220121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210100220121020 is an abundant number, since it is smaller than the sum of its proper divisors (235393838858404).

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

210100220121020 is a wasteful number, since it uses less digits than its factorization.

210100220121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101990398229 (or 101990398227 counting only the distinct ones).

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

Adding to 210100220121020 its reverse (20121022001012), we get a palindrome (230221242122032).

The spelling of 210100220121020 in words is "two hundred ten trillion, one hundred billion, two hundred twenty million, one hundred twenty-one thousand, twenty".