220121432142 has 16 divisors (see below), whose sum is σ = 442943742720. Its totient is φ = 72923664312.

The previous prime is 220121432093. The next prime is 220121432159. The reversal of 220121432142 is 241234121022.

It is a super-2 number, since 2×220121432142² (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 in 7 ways as a sum of consecutive naturals, for example, 112535542 + ... + 112537497.

It is an arithmetic number, because the mean of its divisors is an integer number (27683983920).

Almost surely, 2^220121432142 is an apocalyptic number.

220121432142 is an abundant number, since it is smaller than the sum of its proper divisors (222822310578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220121432142 is a wasteful number, since it uses less digits than its factorization.

220121432142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225073207.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 220121432142 its reverse (241234121022), we get a palindrome (461355553164).

The spelling of 220121432142 in words is "two hundred twenty billion, one hundred twenty-one million, four hundred thirty-two thousand, one hundred forty-two".