1253322220 has 12 divisors (see below), whose sum is σ = 2631976704. Its totient is φ = 501328880.

The previous prime is 1253322199. The next prime is 1253322227. The reversal of 1253322220 is 222233521.

It is a junction number, because it is equal to n+sod(n) for n = 1253322191 and 1253322200.

It is not an unprimeable number, because it can be changed into a prime (1253322227) 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, 31333036 + ... + 31333075.

It is an arithmetic number, because the mean of its divisors is an integer number (219331392).

Almost surely, 2^1253322220 is an apocalyptic number.

1253322220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253322220 is an abundant number, since it is smaller than the sum of its proper divisors (1378654484).

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

1253322220 is a wasteful number, since it uses less digits than its factorization.

1253322220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62666120 (or 62666118 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1253322220 is about 35402.2911687930. The cubic root of 1253322220 is about 1078.1708349288.

Adding to 1253322220 its reverse (222233521), we get a palindrome (1475555741).

The spelling of 1253322220 in words is "one billion, two hundred fifty-three million, three hundred twenty-two thousand, two hundred twenty".