21321222320002 has 32 divisors (see below), whose sum is σ = 35427482438400. Its totient is φ = 9542104801680.

The previous prime is 21321222319997. The next prime is 21321222320023. The reversal of 21321222320002 is 20002322212312.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 580252 + ... + 6555847.

It is an arithmetic number, because the mean of its divisors is an integer number (1107108826200).

Almost surely, 2^{21321222320002} is an apocalyptic number.

21321222320002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21321222320002 is a deficient number, since it is larger than the sum of its proper divisors (14106260118398).

21321222320002 is a wasteful number, since it uses less digits than its factorization.

21321222320002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7138206.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21321222320002 its reverse (20002322212312), we get a palindrome (41323544532314).

The spelling of 21321222320002 in words is "twenty-one trillion, three hundred twenty-one billion, two hundred twenty-two million, three hundred twenty thousand, two".