122243651 has 4 divisors (see below), whose sum is σ = 129434472. Its totient is φ = 115052832.

The previous prime is 122243621. The next prime is 122243687. The reversal of 122243651 is 156342221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156342221 = 7 ⋅22334603.

It is a cyclic number.

It is not a de Polignac number, because 122243651 - 2¹⁸ = 121981507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122243651.

It is not an unprimeable number, because it can be changed into a prime (122243621) 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, 3595385 + ... + 3595418.

It is an arithmetic number, because the mean of its divisors is an integer number (32358618).

Almost surely, 2^122243651 is an apocalyptic number.

122243651 is a deficient number, since it is larger than the sum of its proper divisors (7190821).

122243651 is an equidigital number, since it uses as much as digits as its factorization.

122243651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7190820.

The product of its digits is 2880, while the sum is 26.

The square root of 122243651 is about 11056.3850783156. The cubic root of 122243651 is about 496.2975189413.

Adding to 122243651 its reverse (156342221), we get a palindrome (278585872).

The spelling of 122243651 in words is "one hundred twenty-two million, two hundred forty-three thousand, six hundred fifty-one".