1222153913257 has 2 divisors, whose sum is σ = 1222153913258. Its totient is φ = 1222153913256.

The previous prime is 1222153913243. The next prime is 1222153913303. The reversal of 1222153913257 is 7523193512221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1206561646096 + 15592267161 = 1098436^2 + 124869^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222153913257 - 2¹⁹ = 1222153388969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222153913207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611076956628 + 611076956629.

It is an arithmetic number, because the mean of its divisors is an integer number (611076956629).

Almost surely, 2^{1222153913257} is an apocalyptic number.

It is an amenable number.

1222153913257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222153913257 is an equidigital number, since it uses as much as digits as its factorization.

1222153913257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 43.

The spelling of 1222153913257 in words is "one trillion, two hundred twenty-two billion, one hundred fifty-three million, nine hundred thirteen thousand, two hundred fifty-seven".