1102780213 has 2 divisors, whose sum is σ = 1102780214. Its totient is φ = 1102780212.

The previous prime is 1102780207. The next prime is 1102780229. The reversal of 1102780213 is 3120872011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 862127044 + 240653169 = 29362^2 + 15513^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102780213 - 2⁵ = 1102780181 is a prime.

It is a super-2 number, since 2×1102780213² = 2432248396368650738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1102750213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551390106 + 551390107.

It is an arithmetic number, because the mean of its divisors is an integer number (551390107).

Almost surely, 2^1102780213 is an apocalyptic number.

It is an amenable number.

1102780213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102780213 is an equidigital number, since it uses as much as digits as its factorization.

1102780213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1102780213 is about 33208.1347413552. The cubic root of 1102780213 is about 1033.1490682073.

The spelling of 1102780213 in words is "one billion, one hundred two million, seven hundred eighty thousand, two hundred thirteen".