20112122249 has 2 divisors, whose sum is σ = 20112122250. Its totient is φ = 20112122248.

The previous prime is 20112122207. The next prime is 20112122263. The reversal of 20112122249 is 94222121102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11475765625 + 8636356624 = 107125^2 + 92932^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112122249 - 2²⁰ = 20111073673 is a prime.

It is a super-2 number, since 2×20112122249² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20112128249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056061124 + 10056061125.

It is an arithmetic number, because the mean of its divisors is an integer number (10056061125).

Almost surely, 2^20112122249 is an apocalyptic number.

It is an amenable number.

20112122249 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112122249 is an equidigital number, since it uses as much as digits as its factorization.

20112122249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 20112122249 in words is "twenty billion, one hundred twelve million, one hundred twenty-two thousand, two hundred forty-nine".