221122111022120 has 128 divisors (see below), whose sum is σ = 620307989913600. Its totient is φ = 68919244934400.

The previous prime is 221122111022101. The next prime is 221122111022209. The reversal of 221122111022120 is 21220111221122.

It is a super-2 number, since 2×221122111022120² (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 = 221122111022092 and 221122111022101.

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, 110874155 + ... + 112850885.

It is an arithmetic number, because the mean of its divisors is an integer number (4846156171200).

Almost surely, 2^{221122111022120} is an apocalyptic number.

221122111022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221122111022120 is an abundant number, since it is smaller than the sum of its proper divisors (399185878891480).

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

221122111022120 is a wasteful number, since it uses less digits than its factorization.

221122111022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013079 (or 2013075 counting only the distinct ones).

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

Adding to 221122111022120 its reverse (21220111221122), we get a palindrome (242342222243242).

The spelling of 221122111022120 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, one hundred eleven million, twenty-two thousand, one hundred twenty".