221003223123020 has 48 divisors (see below), whose sum is σ = 510441486887808. Its totient is φ = 79864994538240.

The previous prime is 221003223122993. The next prime is 221003223123031. The reversal of 221003223123020 is 20321322300122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9042672851 + ... + 9042697290.

It is an arithmetic number, because the mean of its divisors is an integer number (10634197643496).

Almost surely, 2^{221003223123020} is an apocalyptic number.

221003223123020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221003223123020 is an abundant number, since it is smaller than the sum of its proper divisors (289438263764788).

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

221003223123020 is a wasteful number, since it uses less digits than its factorization.

221003223123020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18085370210 (or 18085370208 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 221003223123020 its reverse (20321322300122), we get a palindrome (241324545423142).

The spelling of 221003223123020 in words is "two hundred twenty-one trillion, three billion, two hundred twenty-three million, one hundred twenty-three thousand, twenty".