11222220197 has 2 divisors, whose sum is σ = 11222220198. Its totient is φ = 11222220196.

The previous prime is 11222220143. The next prime is 11222220209. The reversal of 11222220197 is 79102222211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5905768801 + 5316451396 = 76849^2 + 72914^2 .

It is a cyclic number.

It is not a de Polignac number, because 11222220197 - 2¹⁴ = 11222203813 is a prime.

It is a super-2 number, since 2×11222220197² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11222220497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611110098 + 5611110099.

It is an arithmetic number, because the mean of its divisors is an integer number (5611110099).

Almost surely, 2^11222220197 is an apocalyptic number.

It is an amenable number.

11222220197 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222220197 is an equidigital number, since it uses as much as digits as its factorization.

11222220197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The spelling of 11222220197 in words is "eleven billion, two hundred twenty-two million, two hundred twenty thousand, one hundred ninety-seven".