100221312311 has 4 divisors (see below), whose sum is σ = 100222150032. Its totient is φ = 100220474592.

The previous prime is 100221312307. The next prime is 100221312319. The reversal of 100221312311 is 113213122001.

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.

It is a cyclic number.

It is not a de Polignac number, because 100221312311 - 2² = 100221312307 is a prime.

It is a super-2 number, since 2×100221312311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100221312311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221312319) 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, 201971 + ... + 491156.

It is an arithmetic number, because the mean of its divisors is an integer number (25055537508).

Almost surely, 2^100221312311 is an apocalyptic number.

100221312311 is a deficient number, since it is larger than the sum of its proper divisors (837721).

100221312311 is an equidigital number, since it uses as much as digits as its factorization.

100221312311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837720.

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

Adding to 100221312311 its reverse (113213122001), we get a palindrome (213434434312).

The spelling of 100221312311 in words is "one hundred billion, two hundred twenty-one million, three hundred twelve thousand, three hundred eleven".