211112221202220 has 96 divisors (see below), whose sum is σ = 646085805942528. Its totient is φ = 51190471994112.

The previous prime is 211112221202191. The next prime is 211112221202243. The reversal of 211112221202220 is 22202122211112.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2019773814 + ... + 2019878333.

It is an arithmetic number, because the mean of its divisors is an integer number (6730060478568).

Almost surely, 2^{211112221202220} is an apocalyptic number.

211112221202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211112221202220 is an abundant number, since it is smaller than the sum of its proper divisors (434973584740308).

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

211112221202220 is a wasteful number, since it uses less digits than its factorization.

211112221202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039652239 (or 4039652237 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211112221202220 its reverse (22202122211112), we get a palindrome (233314343413332).

The spelling of 211112221202220 in words is "two hundred eleven trillion, one hundred twelve billion, two hundred twenty-one million, two hundred two thousand, two hundred twenty".