210101122202220 has 72 divisors (see below), whose sum is σ = 637313751424896. Its totient is φ = 56026349298432.

The previous prime is 210101122202207. The next prime is 210101122202227. The reversal of 210101122202220 is 22202221101012.

It is a happy number.

210101122202220 is a `hidden beast` number, since 21 + 0 + 101 + 122 + 202 + 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 = 210101122202193 and 210101122202202.

It is not an unprimeable number, because it can be changed into a prime (210101122202227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10094949 + ... + 22849731.

Almost surely, 2^{210101122202220} is an apocalyptic number.

210101122202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210101122202220 is an abundant number, since it is smaller than the sum of its proper divisors (427212629222676).

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

210101122202220 is a wasteful number, since it uses less digits than its factorization.

210101122202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12846311 (or 12846306 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 210101122202220 its reverse (22202221101012), we get a palindrome (232303343303232).

The spelling of 210101122202220 in words is "two hundred ten trillion, one hundred one billion, one hundred twenty-two million, two hundred two thousand, two hundred twenty".