22121120201 has 4 divisors (see below), whose sum is σ = 22122017412. Its totient is φ = 22120222992.

The previous prime is 22121120167. The next prime is 22121120207. The reversal of 22121120201 is 10202112122.

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 3868840000 + 18252280201 = 62200^2 + 135101^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121120201 - 2¹⁸ = 22120858057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121120207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410546 + ... + 461291.

It is an arithmetic number, because the mean of its divisors is an integer number (5530504353).

Almost surely, 2^22121120201 is an apocalyptic number.

It is an amenable number.

22121120201 is a deficient number, since it is larger than the sum of its proper divisors (897211).

22121120201 is an equidigital number, since it uses as much as digits as its factorization.

22121120201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897210.

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

Adding to 22121120201 its reverse (10202112122), we get a palindrome (32323232323).

The spelling of 22121120201 in words is "twenty-two billion, one hundred twenty-one million, one hundred twenty thousand, two hundred one".