20112422251 has 2 divisors, whose sum is σ = 20112422252. Its totient is φ = 20112422250.

The previous prime is 20112422227. The next prime is 20112422257. The reversal of 20112422251 is 15222421102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20112422251 - 2¹³ = 20112414059 is a prime.

It is not a weakly prime, because it can be changed into another prime (20112422257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056211125 + 10056211126.

It is an arithmetic number, because the mean of its divisors is an integer number (10056211126).

Almost surely, 2^20112422251 is an apocalyptic number.

20112422251 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112422251 is an equidigital number, since it uses as much as digits as its factorization.

20112422251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 20112422251 its reverse (15222421102), we get a palindrome (35334843353).

The spelling of 20112422251 in words is "twenty billion, one hundred twelve million, four hundred twenty-two thousand, two hundred fifty-one".