221021222002 has 32 divisors (see below), whose sum is σ = 381485032704. Its totient is φ = 94075776000.

The previous prime is 221021221969. The next prime is 221021222057. The reversal of 221021222002 is 200222120122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13777378 + ... + 13793410.

It is an arithmetic number, because the mean of its divisors is an integer number (11921407272).

Almost surely, 2^221021222002 is an apocalyptic number.

221021222002 is a deficient number, since it is larger than the sum of its proper divisors (160463810702).

221021222002 is a wasteful number, since it uses less digits than its factorization.

221021222002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22714.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221021222002 its reverse (200222120122), we get a palindrome (421243342124).

The spelling of 221021222002 in words is "two hundred twenty-one billion, twenty-one million, two hundred twenty-two thousand, two".