102200020102121 has 4 divisors (see below), whose sum is σ = 102200991053700. Its totient is φ = 102199049150544.

The previous prime is 102200020102111. The next prime is 102200020102127. The reversal of 102200020102121 is 121201020002201.

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 36724993813225 + 65475026288896 = 6060115^2 + 8091664^2 .

It is a cyclic number.

It is not a de Polignac number, because 102200020102121 - 2¹⁸ = 102200019839977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102200020102096 and 102200020102105.

It is not an unprimeable number, because it can be changed into a prime (102200020102127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485317886 + ... + 485528423.

It is an arithmetic number, because the mean of its divisors is an integer number (25550247763425).

Almost surely, 2^{102200020102121} is an apocalyptic number.

It is an amenable number.

102200020102121 is a deficient number, since it is larger than the sum of its proper divisors (970951579).

102200020102121 is an equidigital number, since it uses as much as digits as its factorization.

102200020102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970951578.

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

Adding to 102200020102121 its reverse (121201020002201), we get a palindrome (223401040104322).

The spelling of 102200020102121 in words is "one hundred two trillion, two hundred billion, twenty million, one hundred two thousand, one hundred twenty-one".