16221353455142 has 32 divisors (see below), whose sum is σ = 26581768012800. Its totient is φ = 7362862848000.

The previous prime is 16221353455129. The next prime is 16221353455147. The reversal of 16221353455142 is 24155435312261.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16221353455093 and 16221353455102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16221353455147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151379459 + ... + 151486577.

It is an arithmetic number, because the mean of its divisors is an integer number (830680250400).

Almost surely, 2^{16221353455142} is an apocalyptic number.

16221353455142 is a deficient number, since it is larger than the sum of its proper divisors (10360414557658).

16221353455142 is a wasteful number, since it uses less digits than its factorization.

16221353455142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116852.

The product of its digits is 864000, while the sum is 44.

The spelling of 16221353455142 in words is "sixteen trillion, two hundred twenty-one billion, three hundred fifty-three million, four hundred fifty-five thousand, one hundred forty-two".