1222691088 has 80 divisors (see below), whose sum is σ = 3330072576. Its totient is φ = 386002560.

The previous prime is 1222691083. The next prime is 1222691101. The reversal of 1222691088 is 8801962221.

It is a Cunningham number, because it is equal to 34967²-1.

It is not an unprimeable number, because it can be changed into a prime (1222691081) 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, 61195 + ... + 78677.

Almost surely, 2^1222691088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222691088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1665036288).

1222691088 is an abundant number, since it is smaller than the sum of its proper divisors (2107381488).

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

1222691088 is a wasteful number, since it uses less digits than its factorization.

1222691088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17572 (or 17566 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 1222691088 is about 34966.9999857008. Note that the first 4 decimals coincide. The cubic root of 1222691088 is about 1069.3148109815.

The spelling of 1222691088 in words is "one billion, two hundred twenty-two million, six hundred ninety-one thousand, eighty-eight".