1201100403021 has 64 divisors (see below), whose sum is σ = 1701878169600. Its totient is φ = 752251161600.

The previous prime is 1201100403007. The next prime is 1201100403037. The reversal of 1201100403021 is 1203040011021.

It is not a de Polignac number, because 1201100403021 - 2¹⁰ = 1201100401997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201100403821) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 834676420 + ... + 834677858.

It is an arithmetic number, because the mean of its divisors is an integer number (26591846400).

Almost surely, 2^{1201100403021} is an apocalyptic number.

It is an amenable number.

1201100403021 is a deficient number, since it is larger than the sum of its proper divisors (500777766579).

1201100403021 is a wasteful number, since it uses less digits than its factorization.

1201100403021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1201100403021 its reverse (1203040011021), we get a palindrome (2404140414042).

The spelling of 1201100403021 in words is "one trillion, two hundred one billion, one hundred million, four hundred three thousand, twenty-one".