1220200801 has 2 divisors, whose sum is σ = 1220200802. Its totient is φ = 1220200800.

The previous prime is 1220200799. The next prime is 1220200811. The reversal of 1220200801 is 1080020221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1212780625 + 7420176 = 34825^2 + 2724^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220200801 - 2¹ = 1220200799 is a prime.

It is a super-2 number, since 2×1220200801² = 2977779989522083202, which contains 22 as substring.

Together with 1220200799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1220200811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610100400 + 610100401.

It is an arithmetic number, because the mean of its divisors is an integer number (610100401).

Almost surely, 2^1220200801 is an apocalyptic number.

It is an amenable number.

1220200801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220200801 is an equidigital number, since it uses as much as digits as its factorization.

1220200801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1220200801 is about 34931.3727328314. The cubic root of 1220200801 is about 1068.5883503860.

The spelling of 1220200801 in words is "one billion, two hundred twenty million, two hundred thousand, eight hundred one".