221202000157 has 2 divisors, whose sum is σ = 221202000158. Its totient is φ = 221202000156.

The previous prime is 221202000073. The next prime is 221202000163. The reversal of 221202000157 is 751000202122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178606819161 + 42595180996 = 422619^2 + 206386^2 .

It is a cyclic number.

It is not a de Polignac number, because 221202000157 - 2²³ = 221193611549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221202000457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110601000078 + 110601000079.

It is an arithmetic number, because the mean of its divisors is an integer number (110601000079).

Almost surely, 2^221202000157 is an apocalyptic number.

It is an amenable number.

221202000157 is a deficient number, since it is larger than the sum of its proper divisors (1).

221202000157 is an equidigital number, since it uses as much as digits as its factorization.

221202000157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 22.

Adding to 221202000157 its reverse (751000202122), we get a palindrome (972202202279).

The spelling of 221202000157 in words is "two hundred twenty-one billion, two hundred two million, one hundred fifty-seven", and thus it is an aban number.