221002020122 has 16 divisors (see below), whose sum is σ = 357026742240. Its totient is φ = 101994224112.

The previous prime is 221002020119. The next prime is 221002020137. The reversal of 221002020122 is 221020200122.

It is a junction number, because it is equal to n+sod(n) for n = 221002020097 and 221002020106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135029 + ... + 678407.

It is an arithmetic number, because the mean of its divisors is an integer number (22314171390).

Almost surely, 2^221002020122 is an apocalyptic number.

221002020122 is a deficient number, since it is larger than the sum of its proper divisors (136024722118).

221002020122 is a wasteful number, since it uses less digits than its factorization.

221002020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559037.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221002020122 its reverse (221020200122), we get a palindrome (442022220244).

The spelling of 221002020122 in words is "two hundred twenty-one billion, two million, twenty thousand, one hundred twenty-two".