1220132281 has 2 divisors, whose sum is σ = 1220132282. Its totient is φ = 1220132280.

The previous prime is 1220132219. The next prime is 1220132299. The reversal of 1220132281 is 1822310221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 913006656 + 307125625 = 30216^2 + 17525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220132281 - 2⁷ = 1220132153 is a prime.

It is a super-2 number, since 2×1220132281² = 2977445566276525922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1220132201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610066140 + 610066141.

It is an arithmetic number, because the mean of its divisors is an integer number (610066141).

Almost surely, 2^1220132281 is an apocalyptic number.

It is an amenable number.

1220132281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220132281 is an equidigital number, since it uses as much as digits as its factorization.

1220132281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1220132281 is about 34930.3919388260. The cubic root of 1220132281 is about 1068.5683479284.

The spelling of 1220132281 in words is "one billion, two hundred twenty million, one hundred thirty-two thousand, two hundred eighty-one".