121122022012121 has 16 divisors (see below), whose sum is σ = 134649625259520. Its totient is φ = 108196072911360.

The previous prime is 121122022012111. The next prime is 121122022012163. The reversal of 121122022012121 is 121210220221121.

It is a cyclic number.

It is not a de Polignac number, because 121122022012121 - 2¹⁰ = 121122022011097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121122022012093 and 121122022012102.

It is not an unprimeable number, because it can be changed into a prime (121122022012111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16334441 + ... + 22562313.

It is an arithmetic number, because the mean of its divisors is an integer number (8415601578720).

Almost surely, 2^{121122022012121} is an apocalyptic number.

It is an amenable number.

121122022012121 is a deficient number, since it is larger than the sum of its proper divisors (13527603247399).

121122022012121 is a wasteful number, since it uses less digits than its factorization.

121122022012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6276176.

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

Adding to 121122022012121 its reverse (121210220221121), we get a palindrome (242332242233242).

The spelling of 121122022012121 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, twenty-two million, twelve thousand, one hundred twenty-one".