21014402002 has 16 divisors (see below), whose sum is σ = 36197056800. Its totient is φ = 9049263840.

The previous prime is 21014401999. The next prime is 21014402029. The reversal of 21014402002 is 20020441012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25136427 + ... + 25137262.

It is an arithmetic number, because the mean of its divisors is an integer number (2262316050).

Almost surely, 2^21014402002 is an apocalyptic number.

21014402002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21014402002 is a deficient number, since it is larger than the sum of its proper divisors (15182654798).

21014402002 is a wasteful number, since it uses less digits than its factorization.

21014402002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50273721.

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

Adding to 21014402002 its reverse (20020441012), we get a palindrome (41034843014).

The spelling of 21014402002 in words is "twenty-one billion, fourteen million, four hundred two thousand, two".