2221885157 has 2 divisors, whose sum is σ = 2221885158. Its totient is φ = 2221885156.

The previous prime is 2221885153. The next prime is 2221885217. The reversal of 2221885157 is 7515881222.

2221885157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2138692516 + 83192641 = 46246^2 + 9121^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221885157 - 2² = 2221885153 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221885153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110942578 + 1110942579.

It is an arithmetic number, because the mean of its divisors is an integer number (1110942579).

Almost surely, 2^2221885157 is an apocalyptic number.

It is an amenable number.

2221885157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221885157 is an equidigital number, since it uses as much as digits as its factorization.

2221885157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89600, while the sum is 41.

The square root of 2221885157 is about 47136.8768269600. The cubic root of 2221885157 is about 1304.8898987669.

The spelling of 2221885157 in words is "two billion, two hundred twenty-one million, eight hundred eighty-five thousand, one hundred fifty-seven".