221420024122 has 48 divisors (see below), whose sum is σ = 368709926400. Its totient is φ = 98899347200.

The previous prime is 221420024069. The next prime is 221420024131.

221420024122 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 221420024093 and 221420024102.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28943754 + ... + 28951402.

It is an arithmetic number, because the mean of its divisors is an integer number (7681456800).

Almost surely, 2^221420024122 is an apocalyptic number.

221420024122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221420024122 is a deficient number, since it is larger than the sum of its proper divisors (147289902278).

221420024122 is a wasteful number, since it uses less digits than its factorization.

221420024122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8019 (or 7936 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

It can be divided in two parts, 2214200 and 24122, that added together give a palindrome (2238322).

The spelling of 221420024122 in words is "two hundred twenty-one billion, four hundred twenty million, twenty-four thousand, one hundred twenty-two".