110200000021 has 4 divisors (see below), whose sum is σ = 110201438412. Its totient is φ = 110198561632.

The previous prime is 110199999989. The next prime is 110200000033. The reversal of 110200000021 is 120000002011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 93914667025 + 16285332996 = 306455^2 + 127614^2 .

It is a cyclic number.

It is not a de Polignac number, because 110200000021 - 2⁵ = 110199999989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110200000061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597400 + ... + 759793.

It is an arithmetic number, because the mean of its divisors is an integer number (27550359603).

Almost surely, 2^110200000021 is an apocalyptic number.

It is an amenable number.

110200000021 is a deficient number, since it is larger than the sum of its proper divisors (1438391).

110200000021 is an equidigital number, since it uses as much as digits as its factorization.

110200000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438390.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 110200000021 its reverse (120000002011), we get a palindrome (230200002032).

The spelling of 110200000021 in words is "one hundred ten billion, two hundred million, twenty-one", and thus it is an aban number.