100211231231 has 4 divisors (see below), whose sum is σ = 100212260472. Its totient is φ = 100210201992.

The previous prime is 100211231227. The next prime is 100211231233. The reversal of 100211231231 is 132132112001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 132132112001 = 53 ⋅2493058717.

It is a cyclic number.

It is not a de Polignac number, because 100211231231 - 2² = 100211231227 is a prime.

It is a super-2 number, since 2×100211231231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100211231233) 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, 351296 + ... + 569061.

It is an arithmetic number, because the mean of its divisors is an integer number (25053065118).

Almost surely, 2^100211231231 is an apocalyptic number.

100211231231 is a deficient number, since it is larger than the sum of its proper divisors (1029241).

100211231231 is an equidigital number, since it uses as much as digits as its factorization.

100211231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029240.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 100211231231 its reverse (132132112001), we get a palindrome (232343343232).

The spelling of 100211231231 in words is "one hundred billion, two hundred eleven million, two hundred thirty-one thousand, two hundred thirty-one".