22121212101122 has 4 divisors (see below), whose sum is σ = 33181818151686. Its totient is φ = 11060606050560.

The previous prime is 22121212101077. The next prime is 22121212101127. The reversal of 22121212101122 is 22110121212122.

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

It can be written as a sum of positive squares in only one way, i.e., 14918435028721 + 7202777072401 = 3862439^2 + 2683799^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22121212101094 and 22121212101103.

It is not an unprimeable number, because it can be changed into a prime (22121212101127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5530303025279 + ... + 5530303025282.

Almost surely, 2^{22121212101122} is an apocalyptic number.

22121212101122 is a deficient number, since it is larger than the sum of its proper divisors (11060606050564).

22121212101122 is a wasteful number, since it uses less digits than its factorization.

22121212101122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11060606050563.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22121212101122 its reverse (22110121212122), we get a palindrome (44231333313244).

The spelling of 22121212101122 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twelve million, one hundred one thousand, one hundred twenty-two".