1254212220 has 48 divisors (see below), whose sum is σ = 3513394080. Its totient is φ = 334304256.

The previous prime is 1254212207. The next prime is 1254212221. The reversal of 1254212220 is 222124521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254212221) 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, 202936 + ... + 209024.

It is an arithmetic number, because the mean of its divisors is an integer number (73195710).

Almost surely, 2^1254212220 is an apocalyptic number.

1254212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1254212220 is an abundant number, since it is smaller than the sum of its proper divisors (2259181860).

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

1254212220 is a wasteful number, since it uses less digits than its factorization.

1254212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9534 (or 9532 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1254212220 is about 35414.8587460122. The cubic root of 1254212220 is about 1078.4259821374.

Adding to 1254212220 its reverse (222124521), we get a palindrome (1476336741).

The spelling of 1254212220 in words is "one billion, two hundred fifty-four million, two hundred twelve thousand, two hundred twenty".