20113010000221 has 4 divisors (see below), whose sum is σ = 20115692100000. Its totient is φ = 20110327900444.

The previous prime is 20113010000179. The next prime is 20113010000309. The reversal of 20113010000221 is 12200001031102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20113010000221 - 2¹¹ = 20113009998173 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 (20113010000921) 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, 1341038641 + ... + 1341053638.

It is an arithmetic number, because the mean of its divisors is an integer number (5028923025000).

Almost surely, 2^{20113010000221} is an apocalyptic number.

It is an amenable number.

20113010000221 is a deficient number, since it is larger than the sum of its proper divisors (2682099779).

20113010000221 is an equidigital number, since it uses as much as digits as its factorization.

20113010000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682099778.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20113010000221 its reverse (12200001031102), we get a palindrome (32313011031323).

The spelling of 20113010000221 in words is "twenty trillion, one hundred thirteen billion, ten million, two hundred twenty-one", and thus it is an aban number.