1221325083 has 24 divisors (see below), whose sum is σ = 1929170880. Its totient is φ = 738405360.

The previous prime is 1221325081. The next prime is 1221325123. The reversal of 1221325083 is 3805231221.

1221325083 is a `hidden beast` number, since 1 + 22 + 132 + 508 + 3 = 666.

It is not a de Polignac number, because 1221325083 - 2¹ = 1221325081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221325081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26760 + ... + 56202.

It is an arithmetic number, because the mean of its divisors is an integer number (80382120).

Almost surely, 2^1221325083 is an apocalyptic number.

1221325083 is a deficient number, since it is larger than the sum of its proper divisors (707845797).

1221325083 is a wasteful number, since it uses less digits than its factorization.

1221325083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29879 (or 29876 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1221325083 is about 34947.4617533234. The cubic root of 1221325083 is about 1068.9164455243.

The spelling of 1221325083 in words is "one billion, two hundred twenty-one million, three hundred twenty-five thousand, eighty-three".