121001222122001 has 32 divisors (see below), whose sum is σ = 140007664419840. Its totient is φ = 103579426169856.

The previous prime is 121001222121961. The next prime is 121001222122007. The reversal of 121001222122001 is 100221222100121.

It is not a de Polignac number, because 121001222122001 - 2²² = 121001217927697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121001222122007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1386935 + ... + 15618131.

It is an arithmetic number, because the mean of its divisors is an integer number (4375239513120).

Almost surely, 2^{121001222122001} is an apocalyptic number.

It is an amenable number.

121001222122001 is a deficient number, since it is larger than the sum of its proper divisors (19006442297839).

121001222122001 is a wasteful number, since it uses less digits than its factorization.

121001222122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14231793.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121001222122001 its reverse (100221222100121), we get a palindrome (221222444222122).

The spelling of 121001222122001 in words is "one hundred twenty-one trillion, one billion, two hundred twenty-two million, one hundred twenty-two thousand, one".