1222102811 has 2 divisors, whose sum is σ = 1222102812. Its totient is φ = 1222102810.

The previous prime is 1222102807. The next prime is 1222102823. The reversal of 1222102811 is 1182012221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222102811 - 2² = 1222102807 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222102831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611051405 + 611051406.

It is an arithmetic number, because the mean of its divisors is an integer number (611051406).

Almost surely, 2^1222102811 is an apocalyptic number.

1222102811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222102811 is an equidigital number, since it uses as much as digits as its factorization.

1222102811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 1222102811 is about 34958.5870852928. The cubic root of 1222102811 is about 1069.1432892651.

The spelling of 1222102811 in words is "one billion, two hundred twenty-two million, one hundred two thousand, eight hundred eleven".