1272211662 has 32 divisors (see below), whose sum is σ = 2561802912. Its totient is φ = 421185024.

The previous prime is 1272211649. The next prime is 1272211667. The reversal of 1272211662 is 2661122721.

1272211662 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272211667) 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, 594258 + ... + 596394.

It is an arithmetic number, because the mean of its divisors is an integer number (80056341).

Almost surely, 2^1272211662 is an apocalyptic number.

1272211662 is an abundant number, since it is smaller than the sum of its proper divisors (1289591250).

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

1272211662 is a wasteful number, since it uses less digits than its factorization.

1272211662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772.

The product of its digits is 4032, while the sum is 30.

The square root of 1272211662 is about 35668.0762307136. The cubic root of 1272211662 is about 1083.5603981531.

The spelling of 1272211662 in words is "one billion, two hundred seventy-two million, two hundred eleven thousand, six hundred sixty-two".