16221477038 has 16 divisors (see below), whose sum is σ = 26212788000. Its totient is φ = 7484303136.

The previous prime is 16221477037. The next prime is 16221477047. The reversal of 16221477038 is 83077412261.

It is a super-2 number, since 2×16221477038² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16221476986 and 16221477004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16221477037) 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, 26045 + ... + 181992.

It is an arithmetic number, because the mean of its divisors is an integer number (1638299250).

Almost surely, 2^16221477038 is an apocalyptic number.

16221477038 is a deficient number, since it is larger than the sum of its proper divisors (9991310962).

16221477038 is a wasteful number, since it uses less digits than its factorization.

16221477038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211051.

The product of its (nonzero) digits is 112896, while the sum is 41.

Adding to 16221477038 its reverse (83077412261), we get a palindrome (99298889299).

The spelling of 16221477038 in words is "sixteen billion, two hundred twenty-one million, four hundred seventy-seven thousand, thirty-eight".