1234666221937 has 2 divisors, whose sum is σ = 1234666221938. Its totient is φ = 1234666221936.

The previous prime is 1234666221911. The next prime is 1234666222007. The reversal of 1234666221937 is 7391226664321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1205535924961 + 29130296976 = 1097969^2 + 170676^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234666221937 - 2²³ = 1234657833329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1234666221907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617333110968 + 617333110969.

It is an arithmetic number, because the mean of its divisors is an integer number (617333110969).

Almost surely, 2^{1234666221937} is an apocalyptic number.

It is an amenable number.

1234666221937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234666221937 is an equidigital number, since it uses as much as digits as its factorization.

1234666221937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 52.

The spelling of 1234666221937 in words is "one trillion, two hundred thirty-four billion, six hundred sixty-six million, two hundred twenty-one thousand, nine hundred thirty-seven".