121012121210121 has 36 divisors (see below), whose sum is σ = 185131107062928. Its totient is φ = 76158641447568.

The previous prime is 121012121210093. The next prime is 121012121210237.

It is a happy number.

121012121210121 is a `hidden beast` number, since 1 + 210 + 1 + 2 + 121 + 210 + 121 = 666.

121012121210121 is nontrivially palindromic in base 10.

121012121210121 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 121012121210121 - 2⁵ = 121012121210089 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 121012121210094 and 121012121210103.

It is not an unprimeable number, because it can be changed into a prime (121012121210821) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 64886115 + ... + 66725048.

It is an arithmetic number, because the mean of its divisors is an integer number (5142530751748).

Almost surely, 2^{121012121210121} is an apocalyptic number.

It is an amenable number.

121012121210121 is a deficient number, since it is larger than the sum of its proper divisors (64118985852807).

121012121210121 is a wasteful number, since it uses less digits than its factorization.

121012121210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131611490 (or 131611468 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

The spelling of 121012121210121 in words is "one hundred twenty-one trillion, twelve billion, one hundred twenty-one million, two hundred ten thousand, one hundred twenty-one".