121310022277 has 2 divisors, whose sum is σ = 121310022278. Its totient is φ = 121310022276.

The previous prime is 121310022191. The next prime is 121310022299. The reversal of 121310022277 is 772220013121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101836936161 + 19473086116 = 319119^2 + 139546^2 .

It is an emirp because it is prime and its reverse (772220013121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121310022277 - 2⁷ = 121310022149 is a prime.

It is a super-2 number, since 2×121310022277² (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 (121310022677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60655011138 + 60655011139.

It is an arithmetic number, because the mean of its divisors is an integer number (60655011139).

Almost surely, 2^121310022277 is an apocalyptic number.

It is an amenable number.

121310022277 is a deficient number, since it is larger than the sum of its proper divisors (1).

121310022277 is an equidigital number, since it uses as much as digits as its factorization.

121310022277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

Adding to 121310022277 its reverse (772220013121), we get a palindrome (893530035398).

The spelling of 121310022277 in words is "one hundred twenty-one billion, three hundred ten million, twenty-two thousand, two hundred seventy-seven".