2211772829 has 12 divisors (see below), whose sum is σ = 2576029500. Its totient is φ = 1893483648.

The previous prime is 2211772819. The next prime is 2211772847. The reversal of 2211772829 is 9282771122.

It can be written as a sum of positive squares in 2 ways, for example, as 1772241604 + 439531225 = 42098^2 + 20965^2 .

It is not a de Polignac number, because 2211772829 - 2⁴ = 2211772813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211772819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13397 + ... + 67845.

It is an arithmetic number, because the mean of its divisors is an integer number (214669125).

Almost surely, 2^2211772829 is an apocalyptic number.

It is an amenable number.

2211772829 is a deficient number, since it is larger than the sum of its proper divisors (364256671).

2211772829 is an equidigital number, since it uses as much as digits as its factorization.

2211772829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55292 (or 55285 counting only the distinct ones).

The product of its digits is 56448, while the sum is 41.

The square root of 2211772829 is about 47029.4889298193. The cubic root of 2211772829 is about 1302.9072664407.

The spelling of 2211772829 in words is "two billion, two hundred eleven million, seven hundred seventy-two thousand, eight hundred twenty-nine".