21120022002002 has 32 divisors (see below), whose sum is σ = 41214452880384. Its totient is φ = 7870815651600.

The previous prime is 21120022001993. The next prime is 21120022002029. The reversal of 21120022002002 is 20020022002112.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 2981366024 + ... + 2981373107.

It is an arithmetic number, because the mean of its divisors is an integer number (1287951652512).

Almost surely, 2^{21120022002002} is an apocalyptic number.

21120022002002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21120022002002 is a deficient number, since it is larger than the sum of its proper divisors (20094430878382).

21120022002002 is a wasteful number, since it uses less digits than its factorization.

21120022002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5962739174.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21120022002002 its reverse (20020022002112), we get a palindrome (41140044004114).

The spelling of 21120022002002 in words is "twenty-one trillion, one hundred twenty billion, twenty-two million, two thousand, two".