1011112200021 has 32 divisors (see below), whose sum is σ = 1680866500608. Its totient is φ = 525235400640.

The previous prime is 1011112200019. The next prime is 1011112200061. The reversal of 1011112200021 is 1200022111101.

It is not a de Polignac number, because 1011112200021 - 2¹ = 1011112200019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011112200061) 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, 9467100 + ... + 9573306.

It is an arithmetic number, because the mean of its divisors is an integer number (52527078144).

Almost surely, 2^{1011112200021} is an apocalyptic number.

1011112200021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1011112200021 is a deficient number, since it is larger than the sum of its proper divisors (669754300587).

1011112200021 is a wasteful number, since it uses less digits than its factorization.

1011112200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147441.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1011112200021 its reverse (1200022111101), we get a palindrome (2211134311122).

The spelling of 1011112200021 in words is "one trillion, eleven billion, one hundred twelve million, two hundred thousand, twenty-one".