122122221352465 has 4 divisors (see below), whose sum is σ = 146546665622964. Its totient is φ = 97697777081968.

The previous prime is 122122221352433. The next prime is 122122221352507. The reversal of 122122221352465 is 564253122221221.

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 35294637383041 + 86827583969424 = 5940929^2 + 9318132^2 .

It is a cyclic number.

It is not a de Polignac number, because 122122221352465 - 2⁵ = 122122221352433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12212222135242 + ... + 12212222135251.

It is an arithmetic number, because the mean of its divisors is an integer number (36636666405741).

Almost surely, 2^{122122221352465} is an apocalyptic number.

It is an amenable number.

122122221352465 is a deficient number, since it is larger than the sum of its proper divisors (24424444270499).

122122221352465 is an equidigital number, since it uses as much as digits as its factorization.

122122221352465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24424444270498.

The product of its digits is 230400, while the sum is 40.

Adding to 122122221352465 its reverse (564253122221221), we get a palindrome (686375343573686).

The spelling of 122122221352465 in words is "one hundred twenty-two trillion, one hundred twenty-two billion, two hundred twenty-one million, three hundred fifty-two thousand, four hundred sixty-five".