1210221983 has 8 divisors (see below), whose sum is σ = 1232010000. Its totient is φ = 1188476608.

The previous prime is 1210221973. The next prime is 1210222007. The reversal of 1210221983 is 3891220121.

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

It is a cyclic number.

It is not a de Polignac number, because 1210221983 - 2¹⁰ = 1210220959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210221923) 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 7 ways as a sum of consecutive naturals, for example, 49643 + ... + 69891.

It is an arithmetic number, because the mean of its divisors is an integer number (154001250).

Almost surely, 2^1210221983 is an apocalyptic number.

1210221983 is a deficient number, since it is larger than the sum of its proper divisors (21788017).

1210221983 is a wasteful number, since it uses less digits than its factorization.

1210221983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21321.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1210221983 is about 34788.2448968039. The cubic root of 1210221983 is about 1065.6673968541.

The spelling of 1210221983 in words is "one billion, two hundred ten million, two hundred twenty-one thousand, nine hundred eighty-three".