221421124122 has 64 divisors (see below), whose sum is σ = 503145934848. Its totient is φ = 64364328000.

The previous prime is 221421124103. The next prime is 221421124147.

221421124122 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 221421124092 and 221421124101.

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, 465154 + ... + 811917.

It is an arithmetic number, because the mean of its divisors is an integer number (7861655232).

Almost surely, 2^221421124122 is an apocalyptic number.

221421124122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221421124122 is an abundant number, since it is smaller than the sum of its proper divisors (281724810726).

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

221421124122 is a wasteful number, since it uses less digits than its factorization.

221421124122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277195.

The product of its digits is 1024, while the sum is 24.

It can be divided in two parts, 221421 and 124122, that added together give a palindrome (345543).

The spelling of 221421124122 in words is "two hundred twenty-one billion, four hundred twenty-one million, one hundred twenty-four thousand, one hundred twenty-two".