211012112212220 has 72 divisors (see below), whose sum is σ = 498399010316592. Its totient is φ = 74947219522560.

The previous prime is 211012112212219. The next prime is 211012112212247. The reversal of 211012112212220 is 22212211210112.

It is a super-2 number, since 2×211012112212220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 211012112212192 and 211012112212201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1013792309 + ... + 1014000428.

Almost surely, 2^{211012112212220} is an apocalyptic number.

211012112212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211012112212220 is an abundant number, since it is smaller than the sum of its proper divisors (287386898104372).

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

211012112212220 is a wasteful number, since it uses less digits than its factorization.

211012112212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027792811 (or 2027792798 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211012112212220 its reverse (22212211210112), we get a palindrome (233224323422332).

It can be divided in two parts, 2110121 and 12212220, that added together give a palindrome (14322341).

The spelling of 211012112212220 in words is "two hundred eleven trillion, twelve billion, one hundred twelve million, two hundred twelve thousand, two hundred twenty".