22122121013 has 4 divisors (see below), whose sum is σ = 22183742880. Its totient is φ = 22060499148.

The previous prime is 22122121009. The next prime is 22122121067. The reversal of 22122121013 is 31012122122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31012122122 = 2 ⋅15506061061.

It is a cyclic number.

It is not a de Polignac number, because 22122121013 - 2² = 22122121009 is a prime.

It is a super-2 number, since 2×22122121013² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22122120982 and 22122121000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122129013) 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, 30810395 + ... + 30811112.

It is an arithmetic number, because the mean of its divisors is an integer number (5545935720).

Almost surely, 2^22122121013 is an apocalyptic number.

It is an amenable number.

22122121013 is a deficient number, since it is larger than the sum of its proper divisors (61621867).

22122121013 is an equidigital number, since it uses as much as digits as its factorization.

22122121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61621866.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22122121013 its reverse (31012122122), we get a palindrome (53134243135).

The spelling of 22122121013 in words is "twenty-two billion, one hundred twenty-two million, one hundred twenty-one thousand, thirteen".