42221550321 has 32 divisors (see below), whose sum is σ = 65980416000. Its totient is φ = 26610416784.

The previous prime is 42221550299. The next prime is 42221550337. The reversal of 42221550321 is 12305512224.

42221550321 is a `hidden beast` number, since 422 + 215 + 5 + 0 + 3 + 21 = 666.

It is not a de Polignac number, because 42221550321 - 2¹¹ = 42221548273 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (42221550521) 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, 159816 + ... + 331638.

It is an arithmetic number, because the mean of its divisors is an integer number (2061888000).

Almost surely, 2^42221550321 is an apocalyptic number.

It is an amenable number.

42221550321 is a deficient number, since it is larger than the sum of its proper divisors (23758865679).

42221550321 is a wasteful number, since it uses less digits than its factorization.

42221550321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172330 (or 172324 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 42221550321 in words is "forty-two billion, two hundred twenty-one million, five hundred fifty thousand, three hundred twenty-one".