22121121020203 has 4 divisors (see below), whose sum is σ = 22146060278160. Its totient is φ = 22096181762248.

The previous prime is 22121121020177. The next prime is 22121121020213. The reversal of 22121121020203 is 30202012112122.

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

It is a cyclic number.

It is not a de Polignac number, because 22121121020203 - 2⁵ = 22121121020171 is a prime.

It is a super-2 number, since 2×22121121020203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121121020213) 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, 12469627648 + ... + 12469629421.

It is an arithmetic number, because the mean of its divisors is an integer number (5536515069540).

Almost surely, 2^{22121121020203} is an apocalyptic number.

22121121020203 is a deficient number, since it is larger than the sum of its proper divisors (24939257957).

22121121020203 is an equidigital number, since it uses as much as digits as its factorization.

22121121020203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24939257956.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 22121121020203 its reverse (30202012112122), we get a palindrome (52323133132325).

The spelling of 22121121020203 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twenty-one million, twenty thousand, two hundred three".