22012121100111 has 4 divisors (see below), whose sum is σ = 29349494800152. Its totient is φ = 14674747400072.

The previous prime is 22012121100103. The next prime is 22012121100127. The reversal of 22012121100111 is 11100112121022.

It is a happy number.

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 22012121100111 - 2³ = 22012121100103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012121100181) 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, 3668686850016 + ... + 3668686850021.

It is an arithmetic number, because the mean of its divisors is an integer number (7337373700038).

Almost surely, 2^{22012121100111} is an apocalyptic number.

22012121100111 is a deficient number, since it is larger than the sum of its proper divisors (7337373700041).

22012121100111 is an equidigital number, since it uses as much as digits as its factorization.

22012121100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7337373700040.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 22012121100111 its reverse (11100112121022), we get a palindrome (33112233221133).

The spelling of 22012121100111 in words is "twenty-two trillion, twelve billion, one hundred twenty-one million, one hundred thousand, one hundred eleven".