120001220202021 has 16 divisors (see below), whose sum is σ = 165164921602560. Its totient is φ = 77419227130560.

The previous prime is 120001220201969. The next prime is 120001220202067. The reversal of 120001220202021 is 120202022100021.

It is a de Polignac number, because none of the positive numbers 2^k-120001220202021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001220200021) 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, 331735 + ... + 15495563.

It is an arithmetic number, because the mean of its divisors is an integer number (10322807600160).

Almost surely, 2^{120001220202021} is an apocalyptic number.

It is an amenable number.

120001220202021 is a deficient number, since it is larger than the sum of its proper divisors (45163701400539).

120001220202021 is a wasteful number, since it uses less digits than its factorization.

120001220202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15248956.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 120001220202021 its reverse (120202022100021), we get a palindrome (240203242302042).

The spelling of 120001220202021 in words is "one hundred twenty trillion, one billion, two hundred twenty million, two hundred two thousand, twenty-one".