22154144135 has 8 divisors (see below), whose sum is σ = 26587794480. Its totient is φ = 17721434304.

The previous prime is 22154144123. The next prime is 22154144137. The reversal of 22154144135 is 53144145122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22154144135 - 2¹⁰ = 22154143111 is a prime.

It is a super-2 number, since 2×22154144135² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22154144137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182222 + ... + 278411.

It is an arithmetic number, because the mean of its divisors is an integer number (3323474310).

Almost surely, 2^22154144135 is an apocalyptic number.

22154144135 is a deficient number, since it is larger than the sum of its proper divisors (4433650345).

22154144135 is an equidigital number, since it uses as much as digits as its factorization.

22154144135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470257.

The product of its digits is 19200, while the sum is 32.

Adding to 22154144135 its reverse (53144145122), we get a palindrome (75298289257).

The spelling of 22154144135 in words is "twenty-two billion, one hundred fifty-four million, one hundred forty-four thousand, one hundred thirty-five".