221220011301124 has 96 divisors (see below), whose sum is σ = 426830895429120. Its totient is φ = 99485226432000.

The previous prime is 221220011301119. The next prime is 221220011301139. The reversal of 221220011301124 is 421103110022122.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 221220011301095 and 221220011301104.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 13949169907 + ... + 13949185765.

It is an arithmetic number, because the mean of its divisors is an integer number (4446155160720).

Almost surely, 2^{221220011301124} is an apocalyptic number.

It is an amenable number.

221220011301124 is a deficient number, since it is larger than the sum of its proper divisors (205610884127996).

221220011301124 is a wasteful number, since it uses less digits than its factorization.

221220011301124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19649 (or 19647 counting only the distinct ones).

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

Adding to 221220011301124 its reverse (421103110022122), we get a palindrome (642323121323246).

The spelling of 221220011301124 in words is "two hundred twenty-one trillion, two hundred twenty billion, eleven million, three hundred one thousand, one hundred twenty-four".