1211022196 has 12 divisors (see below), whose sum is σ = 2125066048. Its totient is φ = 603860472.

The previous prime is 1211022193. The next prime is 1211022229. The reversal of 1211022196 is 6912201121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211022196.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211022193) 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, 411006 + ... + 413941.

Almost surely, 2^1211022196 is an apocalyptic number.

It is an amenable number.

1211022196 is a deficient number, since it is larger than the sum of its proper divisors (914043852).

1211022196 is a wasteful number, since it uses less digits than its factorization.

1211022196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825318 (or 825316 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1211022196 is about 34799.7441944621. The cubic root of 1211022196 is about 1065.9022223747.

The spelling of 1211022196 in words is "one billion, two hundred eleven million, twenty-two thousand, one hundred ninety-six".