1231222104377 has 2 divisors, whose sum is σ = 1231222104378. Its totient is φ = 1231222104376.

The previous prime is 1231222104361. The next prime is 1231222104443. The reversal of 1231222104377 is 7734012221321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1165613892496 + 65608211881 = 1079636^2 + 256141^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231222104377 - 2⁴ = 1231222104361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231222104337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615611052188 + 615611052189.

It is an arithmetic number, because the mean of its divisors is an integer number (615611052189).

Almost surely, 2^{1231222104377} is an apocalyptic number.

It is an amenable number.

1231222104377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231222104377 is an equidigital number, since it uses as much as digits as its factorization.

1231222104377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

Adding to 1231222104377 its reverse (7734012221321), we get a palindrome (8965234325698).

The spelling of 1231222104377 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-two million, one hundred four thousand, three hundred seventy-seven".