1211119990 has 8 divisors (see below), whose sum is σ = 2180016000. Its totient is φ = 484447992.

The previous prime is 1211119957. The next prime is 1211119999. The reversal of 1211119990 is 999111121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211119999) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 60555990 + ... + 60556009.

It is an arithmetic number, because the mean of its divisors is an integer number (272502000).

Almost surely, 2^1211119990 is an apocalyptic number.

1211119990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211119990 is a deficient number, since it is larger than the sum of its proper divisors (968896010).

1211119990 is a wasteful number, since it uses less digits than its factorization.

1211119990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121112006.

The product of its (nonzero) digits is 1458, while the sum is 34.

The square root of 1211119990 is about 34801.1492626321. The cubic root of 1211119990 is about 1065.9309132984.

The spelling of 1211119990 in words is "one billion, two hundred eleven million, one hundred nineteen thousand, nine hundred ninety".