122222221211212 has 6 divisors (see below), whose sum is σ = 213888887119628. Its totient is φ = 61111110605604.

The previous prime is 122222221211183. The next prime is 122222221211227. The reversal of 122222221211212 is 212112122222221.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15277777651398 + ... + 15277777651405.

Almost surely, 2^{122222221211212} is an apocalyptic number.

It is an amenable number.

122222221211212 is a deficient number, since it is larger than the sum of its proper divisors (91666665908416).

122222221211212 is a wasteful number, since it uses less digits than its factorization.

122222221211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30555555302807 (or 30555555302805 counting only the distinct ones).

The product of its digits is 1024, while the sum is 25.

Adding to 122222221211212 its reverse (212112122222221), we get a palindrome (334334343433433).

It can be divided in two parts, 122222221 and 211212, that multiplied together give a palindrome (25814799741852).

The spelling of 122222221211212 in words is "one hundred twenty-two trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred eleven thousand, two hundred twelve".