121122021021001 has 64 divisors (see below), whose sum is σ = 164338325770752. Its totient is φ = 86204160000000.

The previous prime is 121122021020999. The next prime is 121122021021049. The reversal of 121122021021001 is 100120120221121.

It is not a de Polignac number, because 121122021021001 - 2¹ = 121122021020999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121122021021601) 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, 161488551 + ... + 162236851.

It is an arithmetic number, because the mean of its divisors is an integer number (2567786340168).

Almost surely, 2^{121122021021001} is an apocalyptic number.

121122021021001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121122021021001 is a deficient number, since it is larger than the sum of its proper divisors (43216304749751).

121122021021001 is a wasteful number, since it uses less digits than its factorization.

121122021021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750034.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121122021021001 its reverse (100120120221121), we get a palindrome (221242141242122).

The spelling of 121122021021001 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, twenty-one million, twenty-one thousand, one".