21120120212002 has 48 divisors (see below), whose sum is σ = 38352391539840. Its totient is φ = 8528713947072.

The previous prime is 21120120211943. The next prime is 21120120212027. The reversal of 21120120212002 is 20021202102112.

It is a happy number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 5860227 + ... + 8751142.

It is an arithmetic number, because the mean of its divisors is an integer number (799008157080).

Almost surely, 2^{21120120212002} is an apocalyptic number.

21120120212002 is a deficient number, since it is larger than the sum of its proper divisors (17232271327838).

21120120212002 is a wasteful number, since it uses less digits than its factorization.

21120120212002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14611535 (or 14611468 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21120120212002 its reverse (20021202102112), we get a palindrome (41141322314114).

The spelling of 21120120212002 in words is "twenty-one trillion, one hundred twenty billion, one hundred twenty million, two hundred twelve thousand, two".