21120100121202 has 32 divisors (see below), whose sum is σ = 43140335616000. Its totient is φ = 6890020587408.

The previous prime is 21120100121191. The next prime is 21120100121221. The reversal of 21120100121202 is 20212100102112.

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, 7546549 + ... + 9959447.

It is an arithmetic number, because the mean of its divisors is an integer number (1348135488000).

Almost surely, 2^{21120100121202} is an apocalyptic number.

21120100121202 is an abundant number, since it is smaller than the sum of its proper divisors (22020235494798).

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

21120100121202 is a wasteful number, since it uses less digits than its factorization.

21120100121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2443990.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21120100121202 its reverse (20212100102112), we get a palindrome (41332200223314).

The spelling of 21120100121202 in words is "twenty-one trillion, one hundred twenty billion, one hundred million, one hundred twenty-one thousand, two hundred two".