21022201002 has 32 divisors (see below), whose sum is σ = 45886800384. Its totient is φ = 6367561200.

The previous prime is 21022200973. The next prime is 21022201033. The reversal of 21022201002 is 20010222012.

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, 83613 + ... + 221439.

It is an arithmetic number, because the mean of its divisors is an integer number (1433962512).

Almost surely, 2^21022201002 is an apocalyptic number.

21022201002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21022201002 is an abundant number, since it is smaller than the sum of its proper divisors (24864599382).

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

21022201002 is a wasteful number, since it uses less digits than its factorization.

21022201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140154.

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

Adding to 21022201002 its reverse (20010222012), we get a palindrome (41032423014).

The spelling of 21022201002 in words is "twenty-one billion, twenty-two million, two hundred one thousand, two".