221132140142 has 4 divisors (see below), whose sum is σ = 331698210216. Its totient is φ = 110566070070.

The previous prime is 221132140139. The next prime is 221132140189. The reversal of 221132140142 is 241041231122.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×221132140142² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55283035034 + ... + 55283035037.

It is an arithmetic number, because the mean of its divisors is an integer number (82924552554).

Almost surely, 2^221132140142 is an apocalyptic number.

221132140142 is a deficient number, since it is larger than the sum of its proper divisors (110566070074).

221132140142 is a wasteful number, since it uses less digits than its factorization.

221132140142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110566070073.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 221132140142 its reverse (241041231122), we get a palindrome (462173371264).

The spelling of 221132140142 in words is "two hundred twenty-one billion, one hundred thirty-two million, one hundred forty thousand, one hundred forty-two".