1222265088 has 216 divisors, whose sum is σ = 3979422720. Its totient is φ = 357396480.

The previous prime is 1222265081. The next prime is 1222265101. The reversal of 1222265088 is 8805622221.

1222265088 is a `hidden beast` number, since 122 + 2 + 26 + 508 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1222265081) 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, 734145 + ... + 735807.

Almost surely, 2^1222265088 is an apocalyptic number.

1222265088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222265088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1989711360).

1222265088 is an abundant number, since it is smaller than the sum of its proper divisors (2757157632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222265088 is a wasteful number, since it uses less digits than its factorization.

1222265088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725 (or 1708 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 1222265088 is about 34960.9079973619. The cubic root of 1222265088 is about 1069.1906092574.

The spelling of 1222265088 in words is "one billion, two hundred twenty-two million, two hundred sixty-five thousand, eighty-eight".