1262112220 has 12 divisors (see below), whose sum is σ = 2650435704. Its totient is φ = 504844880.

The previous prime is 1262112211. The next prime is 1262112227. The reversal of 1262112220 is 222112621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1262112227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31552786 + ... + 31552825.

It is an arithmetic number, because the mean of its divisors is an integer number (220869642).

Almost surely, 2^1262112220 is an apocalyptic number.

1262112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1262112220 is an abundant number, since it is smaller than the sum of its proper divisors (1388323484).

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

1262112220 is a wasteful number, since it uses less digits than its factorization.

1262112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63105620 (or 63105618 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1262112220 is about 35526.2187686784. The cubic root of 1262112220 is about 1080.6854987352.

Adding to 1262112220 its reverse (222112621), we get a palindrome (1484224841).

The spelling of 1262112220 in words is "one billion, two hundred sixty-two million, one hundred twelve thousand, two hundred twenty".