1212209982 has 32 divisors (see below), whose sum is σ = 2698790400. Its totient is φ = 403321464.

The previous prime is 1212209953. The next prime is 1212209983. The reversal of 1212209982 is 2899022121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212209983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9019 + ... + 50057.

It is an arithmetic number, because the mean of its divisors is an integer number (84337200).

Almost surely, 2^1212209982 is an apocalyptic number.

1212209982 is an abundant number, since it is smaller than the sum of its proper divisors (1486580418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212209982 is a wasteful number, since it uses less digits than its factorization.

1212209982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41597 (or 41591 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 1212209982 is about 34816.8060281238. The cubic root of 1212209982 is about 1066.2505919980.

The spelling of 1212209982 in words is "one billion, two hundred twelve million, two hundred nine thousand, nine hundred eighty-two".