21121012002002 has 32 divisors (see below), whose sum is σ = 36656406097344. Its totient is φ = 9020489651200.

The previous prime is 21121012001983. The next prime is 21121012002011. The reversal of 21121012002002 is 20020021012112.

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, 47394824 + ... + 47838387.

It is an arithmetic number, because the mean of its divisors is an integer number (1145512690542).

Almost surely, 2^{21121012002002} is an apocalyptic number.

21121012002002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21121012002002 is a deficient number, since it is larger than the sum of its proper divisors (15535394095342).

21121012002002 is a wasteful number, since it uses less digits than its factorization.

21121012002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95233834.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21121012002002 its reverse (20020021012112), we get a palindrome (41141033014114).

The spelling of 21121012002002 in words is "twenty-one trillion, one hundred twenty-one billion, twelve million, two thousand, two".