102200102132021 has 4 divisors (see below), whose sum is σ = 103875513642444. Its totient is φ = 100524690621600.

The previous prime is 102200102132003. The next prime is 102200102132069. The reversal of 102200102132021 is 120231201002201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1528759144900 + 100671342987121 = 1236430^2 + 10033511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102200102132021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102200102132071) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 837705755120 + ... + 837705755241.

It is an arithmetic number, because the mean of its divisors is an integer number (25968878410611).

Almost surely, 2^{102200102132021} is an apocalyptic number.

It is an amenable number.

102200102132021 is a deficient number, since it is larger than the sum of its proper divisors (1675411510423).

102200102132021 is an equidigital number, since it uses as much as digits as its factorization.

102200102132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675411510422.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 102200102132021 its reverse (120231201002201), we get a palindrome (222431303134222).

The spelling of 102200102132021 in words is "one hundred two trillion, two hundred billion, one hundred two million, one hundred thirty-two thousand, twenty-one".