122231377 has 4 divisors (see below), whose sum is σ = 129421476. Its totient is φ = 115041280.

The previous prime is 122231371. The next prime is 122231381. The reversal of 122231377 is 773132221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53523856 + 68707521 = 7316^2 + 8289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122231377 is a prime.

It is a super-2 number, since 2×122231377² = 29881019046632258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122231371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3595024 + ... + 3595057.

It is an arithmetic number, because the mean of its divisors is an integer number (32355369).

Almost surely, 2^122231377 is an apocalyptic number.

122231377 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

122231377 is a deficient number, since it is larger than the sum of its proper divisors (7190099).

122231377 is an equidigital number, since it uses as much as digits as its factorization.

122231377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7190098.

The product of its digits is 3528, while the sum is 28.

The square root of 122231377 is about 11055.8300005020. The cubic root of 122231377 is about 496.2809079637.

Adding to 122231377 its reverse (773132221), we get a palindrome (895363598).

The spelling of 122231377 in words is "one hundred twenty-two million, two hundred thirty-one thousand, three hundred seventy-seven".