121122021101001 has 16 divisors (see below), whose sum is σ = 163540832582400. Its totient is φ = 79725618730368.

The previous prime is 121122021100957. The next prime is 121122021101047. The reversal of 121122021101001 is 100101120221121.

It is a happy number.

It is not a de Polignac number, because 121122021101001 - 2²² = 121122016906697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121122021102001) 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, 89695315 + ... + 91035671.

It is an arithmetic number, because the mean of its divisors is an integer number (10221302036400).

Almost surely, 2^{121122021101001} is an apocalyptic number.

It is an amenable number.

121122021101001 is a deficient number, since it is larger than the sum of its proper divisors (42418811481399).

121122021101001 is a wasteful number, since it uses less digits than its factorization.

121122021101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721728.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121122021101001 its reverse (100101120221121), we get a palindrome (221223141322122).

The spelling of 121122021101001 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, twenty-one million, one hundred one thousand, one".