21012202202002 has 16 divisors (see below), whose sum is σ = 34470212190912. Its totient is φ = 9526943059920.

The previous prime is 21012202201909. The next prime is 21012202202021. The reversal of 21012202202002 is 20020220221012.

It is a super-2 number, since 2×21012202202002² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1202888118 + ... + 1202905585.

It is an arithmetic number, because the mean of its divisors is an integer number (2154388261932).

Almost surely, 2^{21012202202002} is an apocalyptic number.

21012202202002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21012202202002 is a deficient number, since it is larger than the sum of its proper divisors (13458009988910).

21012202202002 is a wasteful number, since it uses less digits than its factorization.

21012202202002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405794113.

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

Adding to 21012202202002 its reverse (20020220221012), we get a palindrome (41032422423014).

The spelling of 21012202202002 in words is "twenty-one trillion, twelve billion, two hundred two million, two hundred two thousand, two".