1111202040021 has 16 divisors (see below), whose sum is σ = 1520063737920. Its totient is φ = 721626193280.

The previous prime is 1111202040019. The next prime is 1111202040041. The reversal of 1111202040021 is 1200402021111.

It is a cyclic number.

It is not a de Polignac number, because 1111202040021 - 2¹ = 1111202040019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111202040041) 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, 6837111 + ... + 6997748.

It is an arithmetic number, because the mean of its divisors is an integer number (95003983620).

Almost surely, 2^{1111202040021} is an apocalyptic number.

It is an amenable number.

1111202040021 is a deficient number, since it is larger than the sum of its proper divisors (408861697899).

1111202040021 is a wasteful number, since it uses less digits than its factorization.

1111202040021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13835556.

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

Adding to 1111202040021 its reverse (1200402021111), we get a palindrome (2311604061132).

The spelling of 1111202040021 in words is "one trillion, one hundred eleven billion, two hundred two million, forty thousand, twenty-one".