122128906893 has 16 divisors (see below), whose sum is σ = 192518474880. Its totient is φ = 67381465536.

The previous prime is 122128906877. The next prime is 122128906909. The reversal of 122128906893 is 398609821221.

It is an interprime number because it is at equal distance from previous prime (122128906877) and next prime (122128906909).

It is not a de Polignac number, because 122128906893 - 2⁴ = 122128906877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122128906793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100269430 + ... + 100270647.

It is an arithmetic number, because the mean of its divisors is an integer number (12032404680).

Almost surely, 2^122128906893 is an apocalyptic number.

It is an amenable number.

122128906893 is a deficient number, since it is larger than the sum of its proper divisors (70389567987).

122128906893 is a wasteful number, since it uses less digits than its factorization.

122128906893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200540116.

The product of its (nonzero) digits is 746496, while the sum is 51.

The spelling of 122128906893 in words is "one hundred twenty-two billion, one hundred twenty-eight million, nine hundred six thousand, eight hundred ninety-three".