22145154542111 has 4 divisors (see below), whose sum is σ = 22145171209992. Its totient is φ = 22145137874232.

The previous prime is 22145154542101. The next prime is 22145154542167. The reversal of 22145154542111 is 11124545154122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22145154542111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22145154542101) 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, 6150305 + ... + 9061818.

It is an arithmetic number, because the mean of its divisors is an integer number (5536292802498).

Almost surely, 2^{22145154542111} is an apocalyptic number.

22145154542111 is a deficient number, since it is larger than the sum of its proper divisors (16667881).

22145154542111 is a wasteful number, since it uses less digits than its factorization.

22145154542111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16667880.

The product of its digits is 64000, while the sum is 38.

Adding to 22145154542111 its reverse (11124545154122), we get a palindrome (33269699696233).

The spelling of 22145154542111 in words is "twenty-two trillion, one hundred forty-five billion, one hundred fifty-four million, five hundred forty-two thousand, one hundred eleven".