10200002121987 has 32 divisors (see below), whose sum is σ = 14101020172800. Its totient is φ = 6550578117888.

The previous prime is 10200002121983. The next prime is 10200002122021. The reversal of 10200002121987 is 78912120000201.

It is not a de Polignac number, because 10200002121987 - 2² = 10200002121983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10200002121983) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 67985428 + ... + 68135294.

It is an arithmetic number, because the mean of its divisors is an integer number (440656880400).

Almost surely, 2^{10200002121987} is an apocalyptic number.

10200002121987 is a deficient number, since it is larger than the sum of its proper divisors (3901018050813).

10200002121987 is a wasteful number, since it uses less digits than its factorization.

10200002121987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151675.

The product of its (nonzero) digits is 4032, while the sum is 33.

The spelling of 10200002121987 in words is "ten trillion, two hundred billion, two million, one hundred twenty-one thousand, nine hundred eighty-seven".