102012201102121 has 4 divisors (see below), whose sum is σ = 102020390261332. Its totient is φ = 102004011942912.

The previous prime is 102012201102107. The next prime is 102012201102143. The reversal of 102012201102121 is 121201102210201.

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 92424285200025 + 9587915902096 = 9613755^2 + 3096436^2 .

It is a cyclic number.

It is not a de Polignac number, because 102012201102121 - 2³³ = 102003611167529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102012201102095 and 102012201102104.

It is not an unprimeable number, because it can be changed into a prime (102012201102421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4094560920 + ... + 4094585833.

It is an arithmetic number, because the mean of its divisors is an integer number (25505097565333).

Almost surely, 2^{102012201102121} is an apocalyptic number.

It is an amenable number.

102012201102121 is a deficient number, since it is larger than the sum of its proper divisors (8189159211).

102012201102121 is an equidigital number, since it uses as much as digits as its factorization.

102012201102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8189159210.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102012201102121 its reverse (121201102210201), we get a palindrome (223213303312322).

The spelling of 102012201102121 in words is "one hundred two trillion, twelve billion, two hundred one million, one hundred two thousand, one hundred twenty-one".