121201220001 has 32 divisors (see below), whose sum is σ = 171497497600. Its totient is φ = 75924164160.

The previous prime is 121201219991. The next prime is 121201220009. The reversal of 121201220001 is 100022102121.

It is not a de Polignac number, because 121201220001 - 2³⁴ = 104021350817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121201220009) 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, 5098020 + ... + 5121738.

It is an arithmetic number, because the mean of its divisors is an integer number (5359296800).

Almost surely, 2^121201220001 is an apocalyptic number.

It is an amenable number.

121201220001 is a deficient number, since it is larger than the sum of its proper divisors (50296277599).

121201220001 is a wasteful number, since it uses less digits than its factorization.

121201220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24469.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121201220001 its reverse (100022102121), we get a palindrome (221223322122).

The spelling of 121201220001 in words is "one hundred twenty-one billion, two hundred one million, two hundred twenty thousand, one".