121002022001 has 16 divisors (see below), whose sum is σ = 140254801920. Its totient is φ = 102241334160.

The previous prime is 121002021979. The next prime is 121002022013. The reversal of 121002022001 is 100220200121.

It is a happy number.

It is not a de Polignac number, because 121002022001 - 2²⁶ = 120934913137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121002022091) 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, 5479340 + ... + 5501378.

It is an arithmetic number, because the mean of its divisors is an integer number (8765925120).

Almost surely, 2^121002022001 is an apocalyptic number.

It is an amenable number.

121002022001 is a deficient number, since it is larger than the sum of its proper divisors (19252779919).

121002022001 is a wasteful number, since it uses less digits than its factorization.

121002022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33164.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121002022001 its reverse (100220200121), we get a palindrome (221222222122).

The spelling of 121002022001 in words is "one hundred twenty-one billion, two million, twenty-two thousand, one".