221000221002137 has 2 divisors, whose sum is σ = 221000221002138. Its totient is φ = 221000221002136.

The previous prime is 221000221002101. The next prime is 221000221002179. The reversal of 221000221002137 is 731200122000122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150996025345936 + 70004195656201 = 12288044^2 + 8366851^2 .

It is a cyclic number.

It is not a de Polignac number, because 221000221002137 - 2³² = 220995926034841 is a prime.

It is not a weakly prime, because it can be changed into another prime (221000221004137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110500110501068 + 110500110501069.

It is an arithmetic number, because the mean of its divisors is an integer number (110500110501069).

Almost surely, 2^{221000221002137} is an apocalyptic number.

It is an amenable number.

221000221002137 is a deficient number, since it is larger than the sum of its proper divisors (1).

221000221002137 is an equidigital number, since it uses as much as digits as its factorization.

221000221002137 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 221000221002137 its reverse (731200122000122), we get a palindrome (952200343002259).

The spelling of 221000221002137 in words is "two hundred twenty-one trillion, two hundred twenty-one million, two thousand, one hundred thirty-seven".