121010221231 has 2 divisors, whose sum is σ = 121010221232. Its totient is φ = 121010221230.

The previous prime is 121010221217. The next prime is 121010221243. The reversal of 121010221231 is 132122010121.

It is a strong prime.

It is an emirp because it is prime and its reverse (132122010121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121010221231 - 2¹⁵ = 121010188463 is a prime.

It is a super-2 number, since 2×121010221231² (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 (121010221261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505110615 + 60505110616.

It is an arithmetic number, because the mean of its divisors is an integer number (60505110616).

Almost surely, 2^121010221231 is an apocalyptic number.

121010221231 is a deficient number, since it is larger than the sum of its proper divisors (1).

121010221231 is an equidigital number, since it uses as much as digits as its factorization.

121010221231 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 16.

Adding to 121010221231 its reverse (132122010121), we get a palindrome (253132231352).

The spelling of 121010221231 in words is "one hundred twenty-one billion, ten million, two hundred twenty-one thousand, two hundred thirty-one".