1200122212218 has 16 divisors (see below), whose sum is σ = 2401396751136. Its totient is φ = 399848682960.

The previous prime is 1200122212217. The next prime is 1200122212231. The reversal of 1200122212218 is 8122122210021.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1200122212217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48000073 + ... + 48025068.

It is an arithmetic number, because the mean of its divisors is an integer number (150087296946).

Almost surely, 2^{1200122212218} is an apocalyptic number.

1200122212218 is an abundant number, since it is smaller than the sum of its proper divisors (1201274538918).

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

1200122212218 is a wasteful number, since it uses less digits than its factorization.

1200122212218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96027229.

The product of its (nonzero) digits is 512, while the sum is 24.

Adding to 1200122212218 its reverse (8122122210021), we get a palindrome (9322244422239).

The spelling of 1200122212218 in words is "one trillion, two hundred billion, one hundred twenty-two million, two hundred twelve thousand, two hundred eighteen".