20221121001 has 8 divisors (see below), whose sum is σ = 26974409440. Its totient is φ = 13474289952.

The previous prime is 20221120967. The next prime is 20221121021. The reversal of 20221121001 is 10012112202.

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

It is not a de Polignac number, because 20221121001 - 2⁷ = 20221120873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221121021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1607035 + ... + 1619568.

It is an arithmetic number, because the mean of its divisors is an integer number (3371801180).

Almost surely, 2^20221121001 is an apocalyptic number.

It is an amenable number.

20221121001 is a deficient number, since it is larger than the sum of its proper divisors (6753288439).

20221121001 is a wasteful number, since it uses less digits than its factorization.

20221121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3228695.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20221121001 its reverse (10012112202), we get a palindrome (30233233203).

The spelling of 20221121001 in words is "twenty billion, two hundred twenty-one million, one hundred twenty-one thousand, one".