1611222131212 has 12 divisors (see below), whose sum is σ = 2858263918216. Its totient is φ = 794575297440.

The previous prime is 1611222131209. The next prime is 1611222131251. The reversal of 1611222131212 is 2121312221161.

It is a super-2 number, since 2×1611222131212² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2758941714 + ... + 2758942297.

Almost surely, 2^{1611222131212} is an apocalyptic number.

It is an amenable number.

1611222131212 is a deficient number, since it is larger than the sum of its proper divisors (1247041787004).

1611222131212 is a wasteful number, since it uses less digits than its factorization.

1611222131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5517884088 (or 5517884086 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

Adding to 1611222131212 its reverse (2121312221161), we get a palindrome (3732534352373).

The spelling of 1611222131212 in words is "one trillion, six hundred eleven billion, two hundred twenty-two million, one hundred thirty-one thousand, two hundred twelve".