20522256151 has 2 divisors, whose sum is σ = 20522256152. Its totient is φ = 20522256150.

The previous prime is 20522256149. The next prime is 20522256179. The reversal of 20522256151 is 15165222502.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20522256151 - 2¹ = 20522256149 is a prime.

Together with 20522256149, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20522256101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261128075 + 10261128076.

It is an arithmetic number, because the mean of its divisors is an integer number (10261128076).

Almost surely, 2^20522256151 is an apocalyptic number.

20522256151 is a deficient number, since it is larger than the sum of its proper divisors (1).

20522256151 is an equidigital number, since it uses as much as digits as its factorization.

20522256151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 20522256151 its reverse (15165222502), we get a palindrome (35687478653).

The spelling of 20522256151 in words is "twenty billion, five hundred twenty-two million, two hundred fifty-six thousand, one hundred fifty-one".