1201222222222 has 24 divisors (see below), whose sum is σ = 1980720342216. Its totient is φ = 545956950000.

The previous prime is 1201222222183. The next prime is 1201222222259. The reversal of 1201222222222 is 2222222221021.

It is a Harshad number since it is a multiple of its sum of digits (22).

1201222222222 is a modest number, since divided by 2222222 gives 120122 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1201222222193 and 1201222222202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2304897 + ... + 2777587.

It is an arithmetic number, because the mean of its divisors is an integer number (82530014259).

Almost surely, 2^{1201222222222} is an apocalyptic number.

1201222222222 is a deficient number, since it is larger than the sum of its proper divisors (779498119994).

1201222222222 is a wasteful number, since it uses less digits than its factorization.

1201222222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483216 (or 483205 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 1201222222222 its reverse (2222222221021), we get a palindrome (3423444443243).

The spelling of 1201222222222 in words is "one trillion, two hundred one billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-two".