1001011272 has 32 divisors (see below), whose sum is σ = 2649736800. Its totient is φ = 314042624.

The previous prime is 1001011229. The next prime is 1001011273. The reversal of 1001011272 is 2721101001.

It is not an unprimeable number, because it can be changed into a prime (1001011273) 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, 1226322 + ... + 1227137.

It is an arithmetic number, because the mean of its divisors is an integer number (82804275).

Almost surely, 2^1001011272 is an apocalyptic number.

1001011272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001011272 is an abundant number, since it is smaller than the sum of its proper divisors (1648725528).

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

1001011272 is a wasteful number, since it uses less digits than its factorization.

1001011272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453485 (or 2453481 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 15.

The square root of 1001011272 is about 31638.7621755340. The cubic root of 1001011272 is about 1000.3369771003.

Adding to 1001011272 its reverse (2721101001), we get a palindrome (3722112273).

The spelling of 1001011272 in words is "one billion, one million, eleven thousand, two hundred seventy-two".