22016421506146 has 4 divisors (see below), whose sum is σ = 33024632259222. Its totient is φ = 11008210753072.

The previous prime is 22016421506117. The next prime is 22016421506173. The reversal of 22016421506146 is 64160512461022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18652370307921 + 3364051198225 = 4318839^2 + 1834135^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 22016421506099 and 22016421506108.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5504105376535 + ... + 5504105376538.

Almost surely, 2^{22016421506146} is an apocalyptic number.

22016421506146 is a deficient number, since it is larger than the sum of its proper divisors (11008210753076).

22016421506146 is a wasteful number, since it uses less digits than its factorization.

22016421506146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11008210753075.

The product of its (nonzero) digits is 138240, while the sum is 40.

Adding to 22016421506146 its reverse (64160512461022), we get a palindrome (86176933967168).

The spelling of 22016421506146 in words is "twenty-two trillion, sixteen billion, four hundred twenty-one million, five hundred six thousand, one hundred forty-six".