120001111021001 has 16 divisors (see below), whose sum is σ = 137975292259200. Its totient is φ = 102236236017408.

The previous prime is 120001111020899. The next prime is 120001111021049. The reversal of 120001111021001 is 100120111100021.

It is a cyclic number.

It is not a de Polignac number, because 120001111021001 - 2³⁴ = 119983931151817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120001111021091) 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, 62169431 + ... + 64070588.

It is an arithmetic number, because the mean of its divisors is an integer number (8623455766200).

Almost surely, 2^{120001111021001} is an apocalyptic number.

It is an amenable number.

120001111021001 is a deficient number, since it is larger than the sum of its proper divisors (17974181238199).

120001111021001 is a wasteful number, since it uses less digits than its factorization.

120001111021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126240848.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 120001111021001 its reverse (100120111100021), we get a palindrome (220121222121022).

The spelling of 120001111021001 in words is "one hundred twenty trillion, one billion, one hundred eleven million, twenty-one thousand, one".