1122019231 has 4 divisors (see below), whose sum is σ = 1126012464. Its totient is φ = 1118026000.

The previous prime is 1122019211. The next prime is 1122019277. The reversal of 1122019231 is 1329102211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1329102211 = 17 ⋅78182483.

It is a cyclic number.

It is not a de Polignac number, because 1122019231 - 2²¹ = 1119922079 is a prime.

It is a super-2 number, since 2×1122019231² = 2517854309467662722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122019211) 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, 1996195 + ... + 1996756.

It is an arithmetic number, because the mean of its divisors is an integer number (281503116).

Almost surely, 2^1122019231 is an apocalyptic number.

1122019231 is a deficient number, since it is larger than the sum of its proper divisors (3993233).

1122019231 is an equidigital number, since it uses as much as digits as its factorization.

1122019231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3993232.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1122019231 is about 33496.5555094849. Note that the first 4 decimals coincide. The cubic root of 1122019231 is about 1039.1225436066.

The spelling of 1122019231 in words is "one billion, one hundred twenty-two million, nineteen thousand, two hundred thirty-one".