21012120001202 has 32 divisors (see below), whose sum is σ = 34676910259200. Its totient is φ = 9469798329600.

The previous prime is 21012120001199. The next prime is 21012120001261. The reversal of 21012120001202 is 20210002121012.

It is an unprimeable number.

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, 7438802 + ... + 9867117.

It is an arithmetic number, because the mean of its divisors is an integer number (1083653445600).

Almost surely, 2^{21012120001202} is an apocalyptic number.

21012120001202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21012120001202 is a deficient number, since it is larger than the sum of its proper divisors (13664790257998).

21012120001202 is a wasteful number, since it uses less digits than its factorization.

21012120001202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17306402.

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

Adding to 21012120001202 its reverse (20210002121012), we get a palindrome (41222122122214).

The spelling of 21012120001202 in words is "twenty-one trillion, twelve billion, one hundred twenty million, one thousand, two hundred two".