2201012981 has 2 divisors, whose sum is σ = 2201012982. Its totient is φ = 2201012980.

The previous prime is 2201012977. The next prime is 2201013011. The reversal of 2201012981 is 1892101022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1506216100 + 694796881 = 38810^2 + 26359^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201012981 - 2² = 2201012977 is a prime.

It is a super-2 number, since 2×2201012981² = 9688916285061012722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2201012981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2201012381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100506490 + 1100506491.

It is an arithmetic number, because the mean of its divisors is an integer number (1100506491).

Almost surely, 2^2201012981 is an apocalyptic number.

It is an amenable number.

2201012981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201012981 is an equidigital number, since it uses as much as digits as its factorization.

2201012981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 2201012981 is about 46914.9547692418. The cubic root of 2201012981 is about 1300.7910335586.

The spelling of 2201012981 in words is "two billion, two hundred one million, twelve thousand, nine hundred eighty-one".