2211221111212 has 6 divisors (see below), whose sum is σ = 3869636944628. Its totient is φ = 1105610555604.

The previous prime is 2211221111201. The next prime is 2211221111213. The reversal of 2211221111212 is 2121111221122.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2211221111212.

It is not an unprimeable number, because it can be changed into a prime (2211221111213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276402638898 + ... + 276402638905.

Almost surely, 2^{2211221111212} is an apocalyptic number.

It is an amenable number.

2211221111212 is a deficient number, since it is larger than the sum of its proper divisors (1658415833416).

2211221111212 is a wasteful number, since it uses less digits than its factorization.

2211221111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552805277807 (or 552805277805 counting only the distinct ones).

The product of its digits is 64, while the sum is 19.

Adding to 2211221111212 its reverse (2121111221122), we get a palindrome (4332332332334).

The spelling of 2211221111212 in words is "two trillion, two hundred eleven billion, two hundred twenty-one million, one hundred eleven thousand, two hundred twelve".