142244611221 has 16 divisors (see below), whose sum is σ = 192094848000. Its totient is φ = 93612490608.

The previous prime is 142244611219. The next prime is 142244611231. The reversal of 142244611221 is 122116442241.

It is not a de Polignac number, because 142244611221 - 2¹ = 142244611219 is a prime.

It is a super-2 number, since 2×142244611221² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142244611231) 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, 1339330 + ... + 1441628.

It is an arithmetic number, because the mean of its divisors is an integer number (12005928000).

Almost surely, 2^142244611221 is an apocalyptic number.

It is an amenable number.

142244611221 is a deficient number, since it is larger than the sum of its proper divisors (49850236779).

142244611221 is a wasteful number, since it uses less digits than its factorization.

142244611221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108248.

The product of its digits is 6144, while the sum is 30.

The spelling of 142244611221 in words is "one hundred forty-two billion, two hundred forty-four million, six hundred eleven thousand, two hundred twenty-one".