1211102212 has 6 divisors (see below), whose sum is σ = 2119428878. Its totient is φ = 605551104.

The previous prime is 1211102183. The next prime is 1211102257. The reversal of 1211102212 is 2122011121.

It can be written as a sum of positive squares in only one way, i.e., 691900416 + 519201796 = 26304^2 + 22786^2 .

It is a super-2 number, since 2×1211102212² = 2933537135822585888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211102192 and 1211102201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151387773 + ... + 151387780.

Almost surely, 2^1211102212 is an apocalyptic number.

It is an amenable number.

1211102212 is a deficient number, since it is larger than the sum of its proper divisors (908326666).

1211102212 is a wasteful number, since it uses less digits than its factorization.

1211102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302775557 (or 302775555 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1211102212 is about 34800.8938390956. The cubic root of 1211102212 is about 1065.9256976818.

Adding to 1211102212 its reverse (2122011121), we get a palindrome (3333113333).

It can be divided in two parts, 12 and 11102212, that added together give a square (11102224 = 3332²).

The spelling of 1211102212 in words is "one billion, two hundred eleven million, one hundred two thousand, two hundred twelve".