221231001021124 has 12 divisors (see below), whose sum is σ = 387154850172048. Its totient is φ = 110615329543400.

The previous prime is 221231001021109. The next prime is 221231001021133. The reversal of 221231001021124 is 421120100132122.

221231001021124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221231001021095 and 221231001021104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39807922 + ... + 45023689.

It is an arithmetic number, because the mean of its divisors is an integer number (32262904181004).

Almost surely, 2^{221231001021124} is an apocalyptic number.

It is an amenable number.

221231001021124 is a deficient number, since it is larger than the sum of its proper divisors (165923849150924).

221231001021124 is a wasteful number, since it uses less digits than its factorization.

221231001021124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85483586 (or 85483584 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 221231001021124 its reverse (421120100132122), we get a palindrome (642351101153246).

The spelling of 221231001021124 in words is "two hundred twenty-one trillion, two hundred thirty-one billion, one million, twenty-one thousand, one hundred twenty-four".