20221121201 has 4 divisors (see below), whose sum is σ = 20448324900. Its totient is φ = 19993917504.

The previous prime is 20221121197. The next prime is 20221121231. The reversal of 20221121201 is 10212112202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3314880625 + 16906240576 = 57575^2 + 130024^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221121201 - 2² = 20221121197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221121231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113601716 + ... + 113601893.

It is an arithmetic number, because the mean of its divisors is an integer number (5112081225).

Almost surely, 2^20221121201 is an apocalyptic number.

It is an amenable number.

20221121201 is a deficient number, since it is larger than the sum of its proper divisors (227203699).

20221121201 is an equidigital number, since it uses as much as digits as its factorization.

20221121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227203698.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20221121201 its reverse (10212112202), we get a palindrome (30433233403).

The spelling of 20221121201 in words is "twenty billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred one".