21012112202000 has 80 divisors (see below), whose sum is σ = 50854820343600. Its totient is φ = 8396981683200.

The previous prime is 21012112201987. The next prime is 21012112202027. The reversal of 21012112202000 is 20221121012.

21012112202000 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 3519240929296 + 17492871272704 = 1875964^2 + 4182448^2 .

It is a tau number, because it is divible by the number of its divisors (80).

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, 2775965 + ... + 7051964.

It is an arithmetic number, because the mean of its divisors is an integer number (635685254295).

Almost surely, 2^{21012112202000} is an apocalyptic number.

21012112202000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21012112202000 is an abundant number, since it is smaller than the sum of its proper divisors (29842708141600).

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

21012112202000 is a wasteful number, since it uses less digits than its factorization.

21012112202000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9829021 (or 9829005 counting only the distinct ones).

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

Adding to 21012112202000 its reverse (20221121012), we get a palindrome (21032333323012).

The spelling of 21012112202000 in words is "twenty-one trillion, twelve billion, one hundred twelve million, two hundred two thousand".