1201222232137 has 2 divisors, whose sum is σ = 1201222232138. Its totient is φ = 1201222232136.

The previous prime is 1201222232129. The next prime is 1201222232167. The reversal of 1201222232137 is 7312322221021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 737544310416 + 463677921721 = 858804^2 + 680939^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201222232137 - 2³ = 1201222232129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201222232167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600611116068 + 600611116069.

It is an arithmetic number, because the mean of its divisors is an integer number (600611116069).

Almost surely, 2^{1201222232137} is an apocalyptic number.

It is an amenable number.

1201222232137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201222232137 is an equidigital number, since it uses as much as digits as its factorization.

1201222232137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 1201222232137 its reverse (7312322221021), we get a palindrome (8513544453158).

The spelling of 1201222232137 in words is "one trillion, two hundred one billion, two hundred twenty-two million, two hundred thirty-two thousand, one hundred thirty-seven".