21021101122002 has 32 divisors (see below), whose sum is σ = 42272707099392. Its totient is φ = 6968645007744.

The previous prime is 21021101122001. The next prime is 21021101122009. The reversal of 21021101122002 is 20022110112012.

It is not an unprimeable number, because it can be changed into a prime (21021101122001) 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 15 ways as a sum of consecutive naturals, for example, 672618 + ... + 6518789.

It is an arithmetic number, because the mean of its divisors is an integer number (1321022096856).

Almost surely, 2^{21021101122002} is an apocalyptic number.

21021101122002 is an abundant number, since it is smaller than the sum of its proper divisors (21251605977390).

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

21021101122002 is a wasteful number, since it uses less digits than its factorization.

21021101122002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7194082.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21021101122002 its reverse (20022110112012), we get a palindrome (41043211234014).

The spelling of 21021101122002 in words is "twenty-one trillion, twenty-one billion, one hundred one million, one hundred twenty-two thousand, two".