22154329 has 2 divisors, whose sum is σ = 22154330. Its totient is φ = 22154328.

The previous prime is 22154311. The next prime is 22154357. The reversal of 22154329 is 92345122.

It is an a-pointer prime, because the next prime (22154357) can be obtained adding 22154329 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19758025 + 2396304 = 4445^2 + 1548^2 .

It is a cyclic number.

It is not a de Polignac number, because 22154329 - 2¹¹ = 22152281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22154297 and 22154306.

It is not a weakly prime, because it can be changed into another prime (22154369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11077164 + 11077165.

It is an arithmetic number, because the mean of its divisors is an integer number (11077165).

Almost surely, 2^22154329 is an apocalyptic number.

It is an amenable number.

22154329 is a deficient number, since it is larger than the sum of its proper divisors (1).

22154329 is an equidigital number, since it uses as much as digits as its factorization.

22154329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The square root of 22154329 is about 4706.8385355778. The cubic root of 22154329 is about 280.8576128799.

The spelling of 22154329 in words is "twenty-two million, one hundred fifty-four thousand, three hundred twenty-nine".