122222111240 has 64 divisors (see below), whose sum is σ = 291098491200. Its totient is φ = 46105258752.

The previous prime is 122222111237. The next prime is 122222111267. The reversal of 122222111240 is 42111222221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1175282 + ... + 1275041.

It is an arithmetic number, because the mean of its divisors is an integer number (4548413925).

Almost surely, 2^122222111240 is an apocalyptic number.

122222111240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122222111240 is an abundant number, since it is smaller than the sum of its proper divisors (168876379960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122222111240 is a wasteful number, since it uses less digits than its factorization.

122222111240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450406 (or 2450402 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 122222111240 its reverse (42111222221), we get a palindrome (164333333461).

The spelling of 122222111240 in words is "one hundred twenty-two billion, two hundred twenty-two million, one hundred eleven thousand, two hundred forty".