102122100120121 has 4 divisors (see below), whose sum is σ = 102130982631412. Its totient is φ = 102113217608832.

The previous prime is 102122100120077. The next prime is 102122100120127. The reversal of 102122100120121 is 121021001221201.

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 56799435171600 + 45322664948521 = 7536540^2 + 6732211^2 .

It is a cyclic number.

It is not a de Polignac number, because 102122100120121 - 2¹⁹ = 102122099595833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102122100120095 and 102122100120104.

It is not an unprimeable number, because it can be changed into a prime (102122100120127) 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, 4441238400 + ... + 4441261393.

It is an arithmetic number, because the mean of its divisors is an integer number (25532745657853).

Almost surely, 2^{102122100120121} is an apocalyptic number.

It is an amenable number.

102122100120121 is a deficient number, since it is larger than the sum of its proper divisors (8882511291).

102122100120121 is an equidigital number, since it uses as much as digits as its factorization.

102122100120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8882511290.

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

Adding to 102122100120121 its reverse (121021001221201), we get a palindrome (223143101341322).

The spelling of 102122100120121 in words is "one hundred two trillion, one hundred twenty-two billion, one hundred million, one hundred twenty thousand, one hundred twenty-one".