121210210102122 has 48 divisors (see below), whose sum is σ = 265789483884288. Its totient is φ = 39916128775680.

The previous prime is 121210210102103. The next prime is 121210210102127. The reversal of 121210210102122 is 221201012012121.

121210210102122 is a `hidden beast` number, since 1 + 21 + 210 + 210 + 10 + 212 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121210210102095 and 121210210102104.

It is not an unprimeable number, because it can be changed into a prime (121210210102127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134415498 + ... + 135314250.

It is an arithmetic number, because the mean of its divisors is an integer number (5537280914256).

Almost surely, 2^{121210210102122} is an apocalyptic number.

121210210102122 is an abundant number, since it is smaller than the sum of its proper divisors (144579273782166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121210210102122 is a wasteful number, since it uses less digits than its factorization.

121210210102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989115 (or 989112 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121210210102122 its reverse (221201012012121), we get a palindrome (342411222114243).

The spelling of 121210210102122 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred ten million, one hundred two thousand, one hundred twenty-two".