10111089221 has 16 divisors (see below), whose sum is σ = 10648715760. Its totient is φ = 9586590720.

The previous prime is 10111089217. The next prime is 10111089223. The reversal of 10111089221 is 12298011101.

It can be written as a sum of positive squares in 8 ways, for example, as 485320900 + 9625768321 = 22030^2 + 98111^2 .

It is a cyclic number.

It is not a de Polignac number, because 10111089221 - 2² = 10111089217 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 (10111089223) 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, 1150781 + ... + 1159533.

It is an arithmetic number, because the mean of its divisors is an integer number (665544735).

Almost surely, 2^10111089221 is an apocalyptic number.

It is an amenable number.

10111089221 is a deficient number, since it is larger than the sum of its proper divisors (537626539).

10111089221 is an equidigital number, since it uses as much as digits as its factorization.

10111089221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9496.

The product of its (nonzero) digits is 288, while the sum is 26.

The spelling of 10111089221 in words is "ten billion, one hundred eleven million, eighty-nine thousand, two hundred twenty-one".