22011200000121 has 4 divisors (see below), whose sum is σ = 29348266666832. Its totient is φ = 14674133333412.

The previous prime is 22011200000113. The next prime is 22011200000131. The reversal of 22011200000121 is 12100000211022.

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.

It is not a de Polignac number, because 22011200000121 - 2³ = 22011200000113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22011200000097 and 22011200000106.

It is not an unprimeable number, because it can be changed into a prime (22011200000131) 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, 3668533333351 + ... + 3668533333356.

It is an arithmetic number, because the mean of its divisors is an integer number (7337066666708).

Almost surely, 2^{22011200000121} is an apocalyptic number.

It is an amenable number.

22011200000121 is a deficient number, since it is larger than the sum of its proper divisors (7337066666711).

22011200000121 is an equidigital number, since it uses as much as digits as its factorization.

22011200000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7337066666710.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22011200000121 its reverse (12100000211022), we get a palindrome (34111200211143).

The spelling of 22011200000121 in words is "twenty-two trillion, eleven billion, two hundred million, one hundred twenty-one", and thus it is an aban number.