20102100121992 has 64 divisors (see below), whose sum is σ = 57582218678400. Its totient is φ = 5728692487680.

The previous prime is 20102100121981. The next prime is 20102100121993. The reversal of 20102100121992 is 29912100120102.

It is not an unprimeable number, because it can be changed into a prime (20102100121993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153733309 + ... + 153864012.

It is an arithmetic number, because the mean of its divisors is an integer number (899722166850).

Almost surely, 2^{20102100121992} is an apocalyptic number.

It is an amenable number.

20102100121992 is an abundant number, since it is smaller than the sum of its proper divisors (37480118556408).

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

20102100121992 is a wasteful number, since it uses less digits than its factorization.

20102100121992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307597726 (or 307597722 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 20102100121992 in words is "twenty trillion, one hundred two billion, one hundred million, one hundred twenty-one thousand, nine hundred ninety-two".