1272222477 has 8 divisors (see below), whose sum is σ = 1884774080. Its totient is φ = 848148300.

The previous prime is 1272222473. The next prime is 1272222503. The reversal of 1272222477 is 7742222721.

It is not a de Polignac number, because 1272222477 - 2² = 1272222473 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272222473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23559649 + ... + 23559702.

It is an arithmetic number, because the mean of its divisors is an integer number (235596760).

Almost surely, 2^1272222477 is an apocalyptic number.

It is an amenable number.

1272222477 is a deficient number, since it is larger than the sum of its proper divisors (612551603).

1272222477 is an equidigital number, since it uses as much as digits as its factorization.

1272222477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47119360 (or 47119354 counting only the distinct ones).

The product of its digits is 43904, while the sum is 36.

The square root of 1272222477 is about 35668.2278365494. The cubic root of 1272222477 is about 1083.5634685732.

The spelling of 1272222477 in words is "one billion, two hundred seventy-two million, two hundred twenty-two thousand, four hundred seventy-seven".