211112012122220 has 96 divisors (see below), whose sum is σ = 498700595232000. Its totient is φ = 74412086677760.

The previous prime is 211112012122171. The next prime is 211112012122241. The reversal of 211112012122220 is 22221210211112.

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 = 211112012122192 and 211112012122201.

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, 108102470 + ... + 110038029.

It is an arithmetic number, because the mean of its divisors is an integer number (5194797867000).

Almost surely, 2^{211112012122220} is an apocalyptic number.

211112012122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211112012122220 is an abundant number, since it is smaller than the sum of its proper divisors (287588583109780).

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

211112012122220 is a wasteful number, since it uses less digits than its factorization.

211112012122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218140655 (or 218140653 counting only the distinct ones).

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

Adding to 211112012122220 its reverse (22221210211112), we get a palindrome (233333222333332).

The spelling of 211112012122220 in words is "two hundred eleven trillion, one hundred twelve billion, twelve million, one hundred twenty-two thousand, two hundred twenty".