11220231789 has 24 divisors (see below), whose sum is σ = 17859601760. Its totient is φ = 6744179232.

The previous prime is 11220231773. The next prime is 11220231851. The reversal of 11220231789 is 98713202211.

It is not a de Polignac number, because 11220231789 - 2⁴ = 11220231773 is a prime.

It is a super-2 number, since 2×11220231789² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220231739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1110079 + ... + 1120140.

Almost surely, 2^11220231789 is an apocalyptic number.

It is an amenable number.

11220231789 is a deficient number, since it is larger than the sum of its proper divisors (6639369971).

11220231789 is a wasteful number, since it uses less digits than its factorization.

11220231789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230281 (or 2230278 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The spelling of 11220231789 in words is "eleven billion, two hundred twenty million, two hundred thirty-one thousand, seven hundred eighty-nine".