1220453281 has 2 divisors, whose sum is σ = 1220453282. Its totient is φ = 1220453280.

The previous prime is 1220453279. The next prime is 1220453287. The reversal of 1220453281 is 1823540221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1131716881 + 88736400 = 33641^2 + 9420^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220453281 - 2¹ = 1220453279 is a prime.

It is a super-2 number, since 2×1220453281² = 2979012422207329922, which contains 22 as substring.

Together with 1220453279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1220453287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610226640 + 610226641.

It is an arithmetic number, because the mean of its divisors is an integer number (610226641).

Almost surely, 2^1220453281 is an apocalyptic number.

It is an amenable number.

1220453281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220453281 is an equidigital number, since it uses as much as digits as its factorization.

1220453281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1220453281 is about 34934.9864891916. The cubic root of 1220453281 is about 1068.6620482506.

The spelling of 1220453281 in words is "one billion, two hundred twenty million, four hundred fifty-three thousand, two hundred eighty-one".