1222175380 has 48 divisors (see below), whose sum is σ = 2819134080. Its totient is φ = 443000448.

The previous prime is 1222175377. The next prime is 1222175387. The reversal of 1222175380 is 835712221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222175387) 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, 61179 + ... + 78658.

It is an arithmetic number, because the mean of its divisors is an integer number (58731960).

Almost surely, 2^1222175380 is an apocalyptic number.

1222175380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222175380 is an abundant number, since it is smaller than the sum of its proper divisors (1596958700).

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

1222175380 is a wasteful number, since it uses less digits than its factorization.

1222175380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139888 (or 139886 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1222175380 is about 34959.6249979888. The cubic root of 1222175380 is about 1069.1644509118.

The spelling of 1222175380 in words is "one billion, two hundred twenty-two million, one hundred seventy-five thousand, three hundred eighty".