1122997770 has 192 divisors, whose sum is σ = 3215407104. Its totient is φ = 281413440.

The previous prime is 1122997753. The next prime is 1122997859. The reversal of 1122997770 is 777992211.

It is a happy number.

It is a super-2 number, since 2×1122997770² = 2522247982849945800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3968049 + ... + 3968331.

It is an arithmetic number, because the mean of its divisors is an integer number (16746912).

Almost surely, 2^1122997770 is an apocalyptic number.

1122997770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122997770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1607703552).

1122997770 is an abundant number, since it is smaller than the sum of its proper divisors (2092409334).

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

1122997770 is a wasteful number, since it uses less digits than its factorization.

1122997770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 111132, while the sum is 45.

The square root of 1122997770 is about 33511.1588877496. The cubic root of 1122997770 is about 1039.4245367905.

The spelling of 1122997770 in words is "one billion, one hundred twenty-two million, nine hundred ninety-seven thousand, seven hundred seventy".