121332020121 has 64 divisors (see below), whose sum is σ = 198566323200. Its totient is φ = 72755843328.

The previous prime is 121332020107. The next prime is 121332020153. The reversal of 121332020121 is 121020233121.

121332020121 is a `hidden beast` number, since 121 + 3 + 320 + 201 + 21 = 666.

It is not a de Polignac number, because 121332020121 - 2⁷ = 121332019993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121332020094 and 121332020103.

It is not an unprimeable number, because it can be changed into a prime (121332020021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3761755 + ... + 3793871.

It is an arithmetic number, because the mean of its divisors is an integer number (3102598800).

Almost surely, 2^121332020121 is an apocalyptic number.

It is an amenable number.

121332020121 is a deficient number, since it is larger than the sum of its proper divisors (77234303079).

121332020121 is a wasteful number, since it uses less digits than its factorization.

121332020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32415 (or 32409 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121332020121 its reverse (121020233121), we get a palindrome (242352253242).

The spelling of 121332020121 in words is "one hundred twenty-one billion, three hundred thirty-two million, twenty thousand, one hundred twenty-one".