20111010000221 has 16 divisors (see below), whose sum is σ = 23024506348800. Its totient is φ = 17207642699520.

The previous prime is 20111010000181. The next prime is 20111010000259. The reversal of 20111010000221 is 12200001011102.

It is not a de Polignac number, because 20111010000221 - 2²⁶ = 20110942891357 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 (20111010009221) 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, 46397861 + ... + 46829301.

It is an arithmetic number, because the mean of its divisors is an integer number (1439031646800).

Almost surely, 2^{20111010000221} is an apocalyptic number.

It is an amenable number.

20111010000221 is a deficient number, since it is larger than the sum of its proper divisors (2913496348579).

20111010000221 is a wasteful number, since it uses less digits than its factorization.

20111010000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443164.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20111010000221 its reverse (12200001011102), we get a palindrome (32311011011323).

The spelling of 20111010000221 in words is "twenty trillion, one hundred eleven billion, ten million, two hundred twenty-one", and thus it is an aban number.