142122110323221 has 64 divisors (see below), whose sum is σ = 241780847001600. Its totient is φ = 80824885516800.

The previous prime is 142122110323211. The next prime is 142122110323229. The reversal of 142122110323221 is 122323011221241.

142122110323221 is a `hidden beast` number, since 1 + 4 + 2 + 1 + 2 + 2 + 110 + 323 + 221 = 666.

It is not a de Polignac number, because 142122110323221 - 2¹⁸ = 142122110061077 is a prime.

It is a super-4 number, since 4×142122110323221⁴ (a number of 58 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142122110323229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45560581 + ... + 48579941.

It is an arithmetic number, because the mean of its divisors is an integer number (3777825734400).

Almost surely, 2^{142122110323221} is an apocalyptic number.

It is an amenable number.

142122110323221 is a deficient number, since it is larger than the sum of its proper divisors (99658736678379).

142122110323221 is a wasteful number, since it uses less digits than its factorization.

142122110323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020567 (or 3020561 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 142122110323221 its reverse (122323011221241), we get a palindrome (264445121544462).

The spelling of 142122110323221 in words is "one hundred forty-two trillion, one hundred twenty-two billion, one hundred ten million, three hundred twenty-three thousand, two hundred twenty-one".