16022253621 has 32 divisors (see below), whose sum is σ = 24160481280. Its totient is φ = 9356745600.

The previous prime is 16022253613. The next prime is 16022253649. The reversal of 16022253621 is 12635222061.

It is not a de Polignac number, because 16022253621 - 2³ = 16022253613 is a prime.

It is a super-2 number, since 2×16022253621² (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 (16022253601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204750 + ... + 271968.

It is an arithmetic number, because the mean of its divisors is an integer number (755015040).

Almost surely, 2^16022253621 is an apocalyptic number.

16022253621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16022253621 is a deficient number, since it is larger than the sum of its proper divisors (8138227659).

16022253621 is a wasteful number, since it uses less digits than its factorization.

16022253621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67497.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 16022253621 its reverse (12635222061), we get a palindrome (28657475682).

The spelling of 16022253621 in words is "sixteen billion, twenty-two million, two hundred fifty-three thousand, six hundred twenty-one".