2111220101197 has 2 divisors, whose sum is σ = 2111220101198. Its totient is φ = 2111220101196.

The previous prime is 2111220101191. The next prime is 2111220101261. The reversal of 2111220101197 is 7911010221112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1547210089161 + 564010012036 = 1243869^2 + 751006^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111220101197 - 2⁷ = 2111220101069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111220101191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055610050598 + 1055610050599.

It is an arithmetic number, because the mean of its divisors is an integer number (1055610050599).

Almost surely, 2^{2111220101197} is an apocalyptic number.

It is an amenable number.

2111220101197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111220101197 is an equidigital number, since it uses as much as digits as its factorization.

2111220101197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 28.

The spelling of 2111220101197 in words is "two trillion, one hundred eleven billion, two hundred twenty million, one hundred one thousand, one hundred ninety-seven".