21012022220002 has 16 divisors (see below), whose sum is σ = 35032050770112. Its totient is φ = 9370713167920.

The previous prime is 21012022219957. The next prime is 21012022220009. The reversal of 21012022220002 is 20002222021012.

It is not an unprimeable number, because it can be changed into a prime (21012022220009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9010299958 + ... + 9010302289.

It is an arithmetic number, because the mean of its divisors is an integer number (2189503173132).

Almost surely, 2^{21012022220002} is an apocalyptic number.

21012022220002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21012022220002 is a deficient number, since it is larger than the sum of its proper divisors (14020028550110).

21012022220002 is a wasteful number, since it uses less digits than its factorization.

21012022220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18020602313.

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

Adding to 21012022220002 its reverse (20002222021012), we get a palindrome (41014244241014).

The spelling of 21012022220002 in words is "twenty-one trillion, twelve billion, twenty-two million, two hundred twenty thousand, two".