1252221300 has 108 divisors (see below), whose sum is σ = 4281871776. Its totient is φ = 303566400.

The previous prime is 1252221293. The next prime is 1252221319. The reversal of 1252221300 is 31222521.

1252221300 is a `hidden beast` number, since 12 + 522 + 2 + 130 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 53344 + ... + 73143.

Almost surely, 2^1252221300 is an apocalyptic number.

1252221300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252221300 is an abundant number, since it is smaller than the sum of its proper divisors (3029650476).

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

1252221300 is a wasteful number, since it uses less digits than its factorization.

1252221300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126518 (or 126508 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1252221300 is about 35386.7390416241. The cubic root of 1252221300 is about 1077.8550535241.

Adding to 1252221300 its reverse (31222521), we get a palindrome (1283443821).

It can be divided in two parts, 1252221 and 300, that added together give a palindrome (1252521).

The spelling of 1252221300 in words is "one billion, two hundred fifty-two million, two hundred twenty-one thousand, three hundred".