142221522141 has 20 divisors (see below), whose sum is σ = 212489276604. Its totient is φ = 94798771200.

The previous prime is 142221522101. The next prime is 142221522203. The reversal of 142221522141 is 141225122241.

142221522141 is a `hidden beast` number, since 1 + 422 + 2 + 15 + 221 + 4 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4428370116 + 137793152025 = 66546^2 + 371205^2 .

It is not a de Polignac number, because 142221522141 - 2⁷ = 142221522013 is a prime.

It is a super-2 number, since 2×142221522141² (a number of 23 digits) contains 22 as substring.

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 (142221522101) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 362781 + ... + 645021.

Almost surely, 2^142221522141 is an apocalyptic number.

It is an amenable number.

142221522141 is a deficient number, since it is larger than the sum of its proper divisors (70267754463).

142221522141 is an equidigital number, since it uses as much as digits as its factorization.

142221522141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288474 (or 288465 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

Adding to 142221522141 its reverse (141225122241), we get a palindrome (283446644382).

The spelling of 142221522141 in words is "one hundred forty-two billion, two hundred twenty-one million, five hundred twenty-two thousand, one hundred forty-one".