221002021002 has 32 divisors (see below), whose sum is σ = 505292511744. Its totient is φ = 63125305200.

The previous prime is 221002020971. The next prime is 221002021003. The reversal of 221002021002 is 200120200122.

It is not an unprimeable number, because it can be changed into a prime (221002021003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 607024 + ... + 900267.

It is an arithmetic number, because the mean of its divisors is an integer number (15790390992).

Almost surely, 2^221002021002 is an apocalyptic number.

221002021002 is an abundant number, since it is smaller than the sum of its proper divisors (284290490742).

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

221002021002 is a wasteful number, since it uses less digits than its factorization.

221002021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510794.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 221002021002 its reverse (200120200122), we get a palindrome (421122221124).

The spelling of 221002021002 in words is "two hundred twenty-one billion, two million, twenty-one thousand, two".