11211102212 has 12 divisors (see below), whose sum is σ = 19813681356. Its totient is φ = 5550050400.

The previous prime is 11211102211. The next prime is 11211102269. The reversal of 11211102212 is 21220111211.

It can be written as a sum of positive squares in 2 ways, for example, as 10591291396 + 619810816 = 102914^2 + 24896^2 .

It is a super-2 number, since 2×11211102212² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11211102211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13874723 + ... + 13875530.

It is an arithmetic number, because the mean of its divisors is an integer number (1651140113).

Almost surely, 2^11211102212 is an apocalyptic number.

It is an amenable number.

11211102212 is a deficient number, since it is larger than the sum of its proper divisors (8602579144).

11211102212 is a wasteful number, since it uses less digits than its factorization.

11211102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27750358 (or 27750356 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11211102212 its reverse (21220111211), we get a palindrome (32431213423).

The spelling of 11211102212 in words is "eleven billion, two hundred eleven million, one hundred two thousand, two hundred twelve".