221002111002 has 16 divisors (see below), whose sum is σ = 442008908352. Its totient is φ = 73666589280.

The previous prime is 221002110983. The next prime is 221002111037. The reversal of 221002111002 is 200111200122.

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, 840102 + ... + 1071342.

It is an arithmetic number, because the mean of its divisors is an integer number (27625556772).

Almost surely, 2^221002111002 is an apocalyptic number.

221002111002 is an abundant number, since it is smaller than the sum of its proper divisors (221006797350).

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

221002111002 is a wasteful number, since it uses less digits than its factorization.

221002111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390533.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221002111002 its reverse (200111200122), we get a palindrome (421113311124).

The spelling of 221002111002 in words is "two hundred twenty-one billion, two million, one hundred eleven thousand, two".