101121001231 has 2 divisors, whose sum is σ = 101121001232. Its totient is φ = 101121001230.

The previous prime is 101121001181. The next prime is 101121001243. The reversal of 101121001231 is 132100121101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101121001231 - 2¹¹ = 101120999183 is a prime.

It is a super-2 number, since 2×101121001231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101121001271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50560500615 + 50560500616.

It is an arithmetic number, because the mean of its divisors is an integer number (50560500616).

Almost surely, 2^101121001231 is an apocalyptic number.

101121001231 is a deficient number, since it is larger than the sum of its proper divisors (1).

101121001231 is an equidigital number, since it uses as much as digits as its factorization.

101121001231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 101121001231 its reverse (132100121101), we get a palindrome (233221122332).

The spelling of 101121001231 in words is "one hundred one billion, one hundred twenty-one million, one thousand, two hundred thirty-one".