1122211901 has 2 divisors, whose sum is σ = 1122211902. Its totient is φ = 1122211900.

The previous prime is 1122211897. The next prime is 1122211907. The reversal of 1122211901 is 1091122211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1122183001 + 28900 = 33499^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122211901 - 2² = 1122211897 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122211907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561105950 + 561105951.

It is an arithmetic number, because the mean of its divisors is an integer number (561105951).

Almost surely, 2^1122211901 is an apocalyptic number.

It is an amenable number.

1122211901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122211901 is an equidigital number, since it uses as much as digits as its factorization.

1122211901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 1122211901 is about 33499.4313533827. The cubic root of 1122211901 is about 1039.1820186068.

The spelling of 1122211901 in words is "one billion, one hundred twenty-two million, two hundred eleven thousand, nine hundred one".