21112021012002 has 32 divisors (see below), whose sum is σ = 42601305929472. Its totient is φ = 6974473545984.

The previous prime is 21112021011899. The next prime is 21112021012007. The reversal of 21112021012002 is 20021012021112.

It is a super-2 number, since 2×21112021012002² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21112021012007) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6749608 + ... + 9369164.

It is an arithmetic number, because the mean of its divisors is an integer number (1331290810296).

Almost surely, 2^{21112021012002} is an apocalyptic number.

21112021012002 is an abundant number, since it is smaller than the sum of its proper divisors (21489284917470).

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

21112021012002 is a wasteful number, since it uses less digits than its factorization.

21112021012002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631562.

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

Adding to 21112021012002 its reverse (20021012021112), we get a palindrome (41133033033114).

The spelling of 21112021012002 in words is "twenty-one trillion, one hundred twelve billion, twenty-one million, twelve thousand, two".