221111121010120 has 64 divisors (see below), whose sum is σ = 566324136051840. Its totient is φ = 76908216000000.

The previous prime is 221111121010103. The next prime is 221111121010133. The reversal of 221111121010120 is 21010121111122.

221111121010120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221111121010094 and 221111121010103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10924452381 + ... + 10924472620.

It is an arithmetic number, because the mean of its divisors is an integer number (8848814625810).

Almost surely, 2^{221111121010120} is an apocalyptic number.

221111121010120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221111121010120 is an abundant number, since it is smaller than the sum of its proper divisors (345213015041720).

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

221111121010120 is a wasteful number, since it uses less digits than its factorization.

221111121010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21848925046 (or 21848925042 counting only the distinct ones).

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

Adding to 221111121010120 its reverse (21010121111122), we get a palindrome (242121242121242).

The spelling of 221111121010120 in words is "two hundred twenty-one trillion, one hundred eleven billion, one hundred twenty-one million, ten thousand, one hundred twenty".