10001211231 has 16 divisors (see below), whose sum is σ = 15402935808. Its totient is φ = 5704790400.

The previous prime is 10001211229. The next prime is 10001211251. The reversal of 10001211231 is 13211210001.

It is not a de Polignac number, because 10001211231 - 2¹ = 10001211229 is a prime.

It is a super-2 number, since 2×10001211231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001211211) 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, 8913175 + ... + 8914296.

It is an arithmetic number, because the mean of its divisors is an integer number (962683488).

Almost surely, 2^10001211231 is an apocalyptic number.

10001211231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10001211231 is a deficient number, since it is larger than the sum of its proper divisors (5401724577).

10001211231 is a wasteful number, since it uses less digits than its factorization.

10001211231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17827502.

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

Adding to 10001211231 its reverse (13211210001), we get a palindrome (23212421232).

The spelling of 10001211231 in words is "ten billion, one million, two hundred eleven thousand, two hundred thirty-one".