22016263021261 has 4 divisors (see below), whose sum is σ = 22037617302624. Its totient is φ = 21994908739900.

The previous prime is 22016263021243. The next prime is 22016263021283. The reversal of 22016263021261 is 16212036261022.

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 a cyclic number.

It is not a de Polignac number, because 22016263021261 - 2¹¹ = 22016263019213 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 (22016263025261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10677139135 + ... + 10677141196.

It is an arithmetic number, because the mean of its divisors is an integer number (5509404325656).

Almost surely, 2^{22016263021261} is an apocalyptic number.

It is an amenable number.

22016263021261 is a deficient number, since it is larger than the sum of its proper divisors (21354281363).

22016263021261 is a wasteful number, since it uses less digits than its factorization.

22016263021261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21354281362.

The product of its (nonzero) digits is 20736, while the sum is 34.

Adding to 22016263021261 its reverse (16212036261022), we get a palindrome (38228299282283).

The spelling of 22016263021261 in words is "twenty-two trillion, sixteen billion, two hundred sixty-three million, twenty-one thousand, two hundred sixty-one".