220211112121 has 48 divisors (see below), whose sum is σ = 305071135488. Its totient is φ = 156223468800.

The previous prime is 220211112113. The next prime is 220211112131. The reversal of 220211112121 is 121211112022.

It is not a de Polignac number, because 220211112121 - 2³ = 220211112113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220211112095 and 220211112104.

It is not an unprimeable number, because it can be changed into a prime (220211112131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 296256 + ... + 726766.

It is an arithmetic number, because the mean of its divisors is an integer number (6355648656).

Almost surely, 2^220211112121 is an apocalyptic number.

It is an amenable number.

220211112121 is a deficient number, since it is larger than the sum of its proper divisors (84860023367).

220211112121 is a wasteful number, since it uses less digits than its factorization.

220211112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430622 (or 430615 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 220211112121 its reverse (121211112022), we get a palindrome (341422224143).

Subtracting from 220211112121 its reverse (121211112022), we obtain a palindrome (99000000099).

The spelling of 220211112121 in words is "two hundred twenty billion, two hundred eleven million, one hundred twelve thousand, one hundred twenty-one".