19322121 has 24 divisors (see below), whose sum is σ = 32277504. Its totient is φ = 10190880.

The previous prime is 19322113. The next prime is 19322131. The reversal of 19322121 is 12122391.

It is not a de Polignac number, because 19322121 - 2³ = 19322113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

19322121 is a modest number, since divided by 2121 gives 1932 as remainder.

It is not an unprimeable number, because it can be changed into a prime (19322131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3145 + ... + 6966.

It is an arithmetic number, because the mean of its divisors is an integer number (1344896).

Almost surely, 2^19322121 is an apocalyptic number.

It is an amenable number.

19322121 is a deficient number, since it is larger than the sum of its proper divisors (12955383).

19322121 is a wasteful number, since it uses less digits than its factorization.

19322121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10141 (or 10134 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

The square root of 19322121 is about 4395.6934606499. The cubic root of 19322121 is about 268.3397015922.

The spelling of 19322121 in words is "nineteen million, three hundred twenty-two thousand, one hundred twenty-one".