22121121201 has 16 divisors (see below), whose sum is σ = 29894532096. Its totient is φ = 14548652496.

The previous prime is 22121121173. The next prime is 22121121233. The reversal of 22121121201 is 10212112122.

It is not a de Polignac number, because 22121121201 - 2⁶ = 22121121137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22121121271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54835 + ... + 217368.

It is an arithmetic number, because the mean of its divisors is an integer number (1868408256).

Almost surely, 2^22121121201 is an apocalyptic number.

It is an amenable number.

22121121201 is a deficient number, since it is larger than the sum of its proper divisors (7773410895).

22121121201 is a wasteful number, since it uses less digits than its factorization.

22121121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272572.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22121121201 its reverse (10212112122), we get a palindrome (32333233323).

The spelling of 22121121201 in words is "twenty-two billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred one".