221142334312131 has 8 divisors (see below), whose sum is σ = 294866354012160. Its totient is φ = 147423268743432.

The previous prime is 221142334312099. The next prime is 221142334312313. The reversal of 221142334312131 is 131213433241122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221142334312131 - 2⁵ = 221142334312099 is a prime.

It is a super-2 number, since 2×221142334312131² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221142334312092 and 221142334312101.

It is not an unprimeable number, because it can be changed into a prime (221142334112131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1238428675 + ... + 1238607228.

It is an arithmetic number, because the mean of its divisors is an integer number (36858294251520).

Almost surely, 2^{221142334312131} is an apocalyptic number.

221142334312131 is a deficient number, since it is larger than the sum of its proper divisors (73724019700029).

221142334312131 is a wasteful number, since it uses less digits than its factorization.

221142334312131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477065665.

The product of its digits is 20736, while the sum is 33.

Adding to 221142334312131 its reverse (131213433241122), we get a palindrome (352355767553253).

The spelling of 221142334312131 in words is "two hundred twenty-one trillion, one hundred forty-two billion, three hundred thirty-four million, three hundred twelve thousand, one hundred thirty-one".