1271012412 has 48 divisors (see below), whose sum is σ = 3157781760. Its totient is φ = 396509952.

The previous prime is 1271012411. The next prime is 1271012441. The reversal of 1271012412 is 2142101721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271012411) 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, 19113 + ... + 53919.

It is an arithmetic number, because the mean of its divisors is an integer number (65787120).

Almost surely, 2^1271012412 is an apocalyptic number.

1271012412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1271012412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1578890880).

1271012412 is an abundant number, since it is smaller than the sum of its proper divisors (1886769348).

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

1271012412 is a wasteful number, since it uses less digits than its factorization.

1271012412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35010 (or 35008 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1271012412 is about 35651.2610155658. The cubic root of 1271012412 is about 1083.2198184702.

The spelling of 1271012412 in words is "one billion, two hundred seventy-one million, twelve thousand, four hundred twelve".