221220042401142 has 20 divisors (see below), whose sum is σ = 495696761676996. Its totient is φ = 73740014133660.

The previous prime is 221220042401117. The next prime is 221220042401153. The reversal of 221220042401142 is 241104240022122.

221220042401142 is a `hidden beast` number, since 2 + 2 + 1 + 2 + 200 + 42 + 401 + 14 + 2 = 666.

221220042401142 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 682777908484 + ... + 682777908807.

Almost surely, 2^{221220042401142} is an apocalyptic number.

221220042401142 is an abundant number, since it is smaller than the sum of its proper divisors (274476719275854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221220042401142 is a wasteful number, since it uses less digits than its factorization.

221220042401142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365555817305 (or 1365555817296 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 221220042401142 its reverse (241104240022122), we get a palindrome (462324282423264).

The spelling of 221220042401142 in words is "two hundred twenty-one trillion, two hundred twenty billion, forty-two million, four hundred one thousand, one hundred forty-two".