211012020212220 has 96 divisors (see below), whose sum is σ = 657066421213440. Its totient is φ = 56219765152320.

The previous prime is 211012020212207. The next prime is 211012020212263. The reversal of 211012020212220 is 22212020210112.

It is a happy number.

211012020212220 is a `hidden beast` number, since 2 + 110 + 120 + 2 + 0 + 212 + 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 = 211012020212193 and 211012020212202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173375326 + ... + 174588165.

It is an arithmetic number, because the mean of its divisors is an integer number (6844441887640).

Almost surely, 2^{211012020212220} is an apocalyptic number.

211012020212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211012020212220 is an abundant number, since it is smaller than the sum of its proper divisors (446054401001220).

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

211012020212220 is a wasteful number, since it uses less digits than its factorization.

211012020212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347964632 (or 347964624 counting only the distinct ones).

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

Adding to 211012020212220 its reverse (22212020210112), we get a palindrome (233224040422332).

The spelling of 211012020212220 in words is "two hundred eleven trillion, twelve billion, twenty million, two hundred twelve thousand, two hundred twenty".