101211111020231 has 2 divisors, whose sum is σ = 101211111020232. Its totient is φ = 101211111020230.

The previous prime is 101211111020197. The next prime is 101211111020237. The reversal of 101211111020231 is 132020111112101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101211111020231 is a prime.

It is a super-2 number, since 2×101211111020231² (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 (101211111020237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605555510115 + 50605555510116.

It is an arithmetic number, because the mean of its divisors is an integer number (50605555510116).

Almost surely, 2^{101211111020231} is an apocalyptic number.

101211111020231 is a deficient number, since it is larger than the sum of its proper divisors (1).

101211111020231 is an equidigital number, since it uses as much as digits as its factorization.

101211111020231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 101211111020231 its reverse (132020111112101), we get a palindrome (233231222132332).

The spelling of 101211111020231 in words is "one hundred one trillion, two hundred eleven billion, one hundred eleven million, twenty thousand, two hundred thirty-one".