121012212102121 has 32 divisors (see below), whose sum is σ = 126928315616256. Its totient is φ = 115278720648000.

The previous prime is 121012212102091. The next prime is 121012212102179. The reversal of 121012212102121 is 121201212210121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121012212102121 - 2⁷ = 121012212101993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121012212102521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126304686 + ... + 127259176.

It is an arithmetic number, because the mean of its divisors is an integer number (3966509863008).

Almost surely, 2^{121012212102121} is an apocalyptic number.

It is an amenable number.

121012212102121 is a deficient number, since it is larger than the sum of its proper divisors (5916103514135).

121012212102121 is a wasteful number, since it uses less digits than its factorization.

121012212102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955053.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121012212102121 its reverse (121201212210121), we get a palindrome (242213424312242).

The spelling of 121012212102121 in words is "one hundred twenty-one trillion, twelve billion, two hundred twelve million, one hundred two thousand, one hundred twenty-one".