221222410002 has 24 divisors (see below), whose sum is σ = 522889333200. Its totient is φ = 67037093880.

The previous prime is 221222409971. The next prime is 221222410021. The reversal of 221222410002 is 200014222122.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 558642252 + ... + 558642647.

It is an arithmetic number, because the mean of its divisors is an integer number (21787055550).

Almost surely, 2^221222410002 is an apocalyptic number.

221222410002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221222410002 is an abundant number, since it is smaller than the sum of its proper divisors (301666923198).

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

221222410002 is a wasteful number, since it uses less digits than its factorization.

221222410002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117284918 (or 1117284915 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 221222410002 its reverse (200014222122), we get a palindrome (421236632124).

The spelling of 221222410002 in words is "two hundred twenty-one billion, two hundred twenty-two million, four hundred ten thousand, two".