128122051 has 2 divisors, whose sum is σ = 128122052. Its totient is φ = 128122050.

The previous prime is 128122019. The next prime is 128122063. The reversal of 128122051 is 150221821.

It is a strong prime.

It is an emirp because it is prime and its reverse (150221821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128122051 - 2⁵ = 128122019 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128122091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64061025 + 64061026.

It is an arithmetic number, because the mean of its divisors is an integer number (64061026).

Almost surely, 2^128122051 is an apocalyptic number.

128122051 is a deficient number, since it is larger than the sum of its proper divisors (1).

128122051 is an equidigital number, since it uses as much as digits as its factorization.

128122051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 128122051 is about 11319.1011568940. The cubic root of 128122051 is about 504.1285509726.

Adding to 128122051 its reverse (150221821), we get a palindrome (278343872).

It can be divided in two parts, 1281 and 22051, that added together give a palindrome (23332).

The spelling of 128122051 in words is "one hundred twenty-eight million, one hundred twenty-two thousand, fifty-one".