100221111020231 has 2 divisors, whose sum is σ = 100221111020232. Its totient is φ = 100221111020230.

The previous prime is 100221111020201. The next prime is 100221111020287. The reversal of 100221111020231 is 132020111122001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100221111020231 is a prime.

It is a super-2 number, since 2×100221111020231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100221111020201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110555510115 + 50110555510116.

It is an arithmetic number, because the mean of its divisors is an integer number (50110555510116).

Almost surely, 2^{100221111020231} is an apocalyptic number.

100221111020231 is a deficient number, since it is larger than the sum of its proper divisors (1).

100221111020231 is an equidigital number, since it uses as much as digits as its factorization.

100221111020231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 100221111020231 its reverse (132020111122001), we get a palindrome (232241222142232).

The spelling of 100221111020231 in words is "one hundred trillion, two hundred twenty-one billion, one hundred eleven million, twenty thousand, two hundred thirty-one".