1001212131 has 8 divisors (see below), whose sum is σ = 1337265424. Its totient is φ = 666316800.

The previous prime is 1001212111. The next prime is 1001212181. The reversal of 1001212131 is 1312121001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1001212131 - 2⁶ = 1001212067 is a prime.

It is a super-2 number, since 2×1001212131² = 2004851462523122322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001212111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287470 + ... + 290931.

It is an arithmetic number, because the mean of its divisors is an integer number (167158178).

Almost surely, 2^1001212131 is an apocalyptic number.

1001212131 is a deficient number, since it is larger than the sum of its proper divisors (336053293).

1001212131 is an equidigital number, since it uses as much as digits as its factorization.

1001212131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578981.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1001212131 is about 31641.9362713472. The cubic root of 1001212131 is about 1000.4038805252.

Adding to 1001212131 its reverse (1312121001), we get a palindrome (2313333132).

The spelling of 1001212131 in words is "one billion, one million, two hundred twelve thousand, one hundred thirty-one".