1001212312 has 16 divisors (see below), whose sum is σ = 1886805360. Its totient is φ = 498064224.

The previous prime is 1001212309. The next prime is 1001212319. The reversal of 1001212312 is 2132121001.

It is a junction number, because it is equal to n+sod(n) for n = 1001212292 and 1001212301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001212319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316068 + ... + 319219.

It is an arithmetic number, because the mean of its divisors is an integer number (117925335).

Almost surely, 2^1001212312 is an apocalyptic number.

It is an amenable number.

1001212312 is a deficient number, since it is larger than the sum of its proper divisors (885593048).

1001212312 is a wasteful number, since it uses less digits than its factorization.

1001212312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635490 (or 635486 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1001212312 is about 31641.9391314755. The cubic root of 1001212312 is about 1000.4039408099.

Adding to 1001212312 its reverse (2132121001), we get a palindrome (3133333313).

The spelling of 1001212312 in words is "one billion, one million, two hundred twelve thousand, three hundred twelve".