221130421012 has 12 divisors (see below), whose sum is σ = 392428634976. Its totient is φ = 109007953880.

The previous prime is 221130420949. The next prime is 221130421019. The reversal of 221130421012 is 210124031122.

It is a super-2 number, since 2×221130421012² (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 (221130421019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389313838 + ... + 389314405.

It is an arithmetic number, because the mean of its divisors is an integer number (32702386248).

Almost surely, 2^221130421012 is an apocalyptic number.

It is an amenable number.

221130421012 is a deficient number, since it is larger than the sum of its proper divisors (171298213964).

221130421012 is a wasteful number, since it uses less digits than its factorization.

221130421012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778628318 (or 778628316 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 221130421012 its reverse (210124031122), we get a palindrome (431254452134).

The spelling of 221130421012 in words is "two hundred twenty-one billion, one hundred thirty million, four hundred twenty-one thousand, twelve".