2111211229 has 2 divisors, whose sum is σ = 2111211230. Its totient is φ = 2111211228.

The previous prime is 2111211203. The next prime is 2111211233. The reversal of 2111211229 is 9221121112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1978915225 + 132296004 = 44485^2 + 11502^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111211229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111251229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055605614 + 1055605615.

It is an arithmetic number, because the mean of its divisors is an integer number (1055605615).

Almost surely, 2^2111211229 is an apocalyptic number.

It is an amenable number.

2111211229 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111211229 is an equidigital number, since it uses as much as digits as its factorization.

2111211229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 22.

The square root of 2111211229 is about 45947.9186579762. The cubic root of 2111211229 is about 1282.8539892529.

The spelling of 2111211229 in words is "two billion, one hundred eleven million, two hundred eleven thousand, two hundred twenty-nine".