1213011250 has 80 divisors (see below), whose sum is σ = 2534488704. Its totient is φ = 431480000.

The previous prime is 1213011227. The next prime is 1213011253. The reversal of 1213011250 is 521103121.

It is not an unprimeable number, because it can be changed into a prime (1213011253) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 645312 + ... + 647188.

Almost surely, 2^1213011250 is an apocalyptic number.

1213011250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213011250 is an abundant number, since it is smaller than the sum of its proper divisors (1321477454).

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

1213011250 is a wasteful number, since it uses less digits than its factorization.

1213011250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957 (or 1942 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1213011250 is about 34828.3110414502. The cubic root of 1213011250 is about 1066.4854699811.

Adding to 1213011250 its reverse (521103121), we get a palindrome (1734114371).

The spelling of 1213011250 in words is "one billion, two hundred thirteen million, eleven thousand, two hundred fifty".