1202221020137 has 2 divisors, whose sum is σ = 1202221020138. Its totient is φ = 1202221020136.

The previous prime is 1202221020113. The next prime is 1202221020149. The reversal of 1202221020137 is 7310201222021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1187524549696 + 14696470441 = 1089736^2 + 121229^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202221020137 - 2³⁰ = 1201147278313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1202221020107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601110510068 + 601110510069.

It is an arithmetic number, because the mean of its divisors is an integer number (601110510069).

Almost surely, 2^{1202221020137} is an apocalyptic number.

It is an amenable number.

1202221020137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202221020137 is an equidigital number, since it uses as much as digits as its factorization.

1202221020137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 1202221020137 its reverse (7310201222021), we get a palindrome (8512422242158).

The spelling of 1202221020137 in words is "one trillion, two hundred two billion, two hundred twenty-one million, twenty thousand, one hundred thirty-seven".