121010212122121 has 32 divisors (see below), whose sum is σ = 144417899888640. Its totient is φ = 99139391055936.

The previous prime is 121010212122049. The next prime is 121010212122161. The reversal of 121010212122121 is 121221212010121.

It is a happy number.

It is not a de Polignac number, because 121010212122121 - 2²³ = 121010203733513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121010212122161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3084693535 + ... + 3084732763.

It is an arithmetic number, because the mean of its divisors is an integer number (4513059371520).

Almost surely, 2^{121010212122121} is an apocalyptic number.

It is an amenable number.

121010212122121 is a deficient number, since it is larger than the sum of its proper divisors (23407687766519).

121010212122121 is a wasteful number, since it uses less digits than its factorization.

121010212122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53053.

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

Adding to 121010212122121 its reverse (121221212010121), we get a palindrome (242231424132242).

The spelling of 121010212122121 in words is "one hundred twenty-one trillion, ten billion, two hundred twelve million, one hundred twenty-two thousand, one hundred twenty-one".