1001331212 has 48 divisors (see below), whose sum is σ = 2123392320. Its totient is φ = 403341312.

The previous prime is 1001331211. The next prime is 1001331223. The reversal of 1001331212 is 2121331001.

It is a super-2 number, since 2×1001331212² = 2005328392250777888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (1001331211) 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, 669938 + ... + 671430.

It is an arithmetic number, because the mean of its divisors is an integer number (44237340).

Almost surely, 2^1001331212 is an apocalyptic number.

It is an amenable number.

1001331212 is an abundant number, since it is smaller than the sum of its proper divisors (1122061108).

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

1001331212 is a wasteful number, since it uses less digits than its factorization.

1001331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930 (or 2928 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1001331212 is about 31643.8179112445. The cubic root of 1001331212 is about 1000.4435405760.

Adding to 1001331212 its reverse (2121331001), we get a palindrome (3122662213).

The spelling of 1001331212 in words is "one billion, one million, three hundred thirty-one thousand, two hundred twelve".