121201020221001 has 32 divisors (see below), whose sum is σ = 187295021107200. Its totient is φ = 68279886716160.

The previous prime is 121201020220993. The next prime is 121201020221023. The reversal of 121201020221001 is 100122020102121.

It is not a de Polignac number, because 121201020221001 - 2³ = 121201020220993 is a prime.

It is a super-2 number, since 2×121201020221001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121201020261001) 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, 41851330 + ... + 44653508.

It is an arithmetic number, because the mean of its divisors is an integer number (5852969409600).

Almost surely, 2^{121201020221001} is an apocalyptic number.

It is an amenable number.

121201020221001 is a deficient number, since it is larger than the sum of its proper divisors (66094000886199).

121201020221001 is a wasteful number, since it uses less digits than its factorization.

121201020221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831269.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121201020221001 its reverse (100122020102121), we get a palindrome (221323040323122).

The spelling of 121201020221001 in words is "one hundred twenty-one trillion, two hundred one billion, twenty million, two hundred twenty-one thousand, one".