20122291321 has 8 divisors (see below), whose sum is σ = 21988993824. Its totient is φ = 18261822720.

The previous prime is 20122291303. The next prime is 20122291331. The reversal of 20122291321 is 12319222102.

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 20122291321 - 2¹¹ = 20122289273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122291331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1551720 + ... + 1564633.

It is an arithmetic number, because the mean of its divisors is an integer number (2748624228).

Almost surely, 2^20122291321 is an apocalyptic number.

It is an amenable number.

20122291321 is a deficient number, since it is larger than the sum of its proper divisors (1866702503).

20122291321 is a wasteful number, since it uses less digits than its factorization.

20122291321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116951.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 20122291321 in words is "twenty billion, one hundred twenty-two million, two hundred ninety-one thousand, three hundred twenty-one".