102121122102122 has 4 divisors (see below), whose sum is σ = 153181683153186. Its totient is φ = 51060561051060.

The previous prime is 102121122102001. The next prime is 102121122102191. The reversal of 102121122102122 is 221201221121201.

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

It can be written as a sum of positive squares in only one way, i.e., 81840591603241 + 20280530498881 = 9046579^2 + 4503391^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102121122102094 and 102121122102103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25530280525529 + ... + 25530280525532.

Almost surely, 2^{102121122102122} is an apocalyptic number.

102121122102122 is a deficient number, since it is larger than the sum of its proper divisors (51060561051064).

102121122102122 is an equidigital number, since it uses as much as digits as its factorization.

102121122102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51060561051063.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 102121122102122 its reverse (221201221121201), we get a palindrome (323322343223323).

The spelling of 102121122102122 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred twenty-two million, one hundred two thousand, one hundred twenty-two".