221121031303323 has 64 divisors (see below), whose sum is σ = 341367736993920. Its totient is φ = 141341952761856.

The previous prime is 221121031303301. The next prime is 221121031303387. The reversal of 221121031303323 is 323303130121122.

221121031303323 is a `hidden beast` number, since 2 + 2 + 1 + 1 + 2 + 1 + 0 + 31 + 303 + 323 = 666.

It is not a de Polignac number, because 221121031303323 - 2³⁷ = 220983592349851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (221121031303723) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17681661 + ... + 27475137.

It is an arithmetic number, because the mean of its divisors is an integer number (5333870890530).

Almost surely, 2^{221121031303323} is an apocalyptic number.

221121031303323 is a deficient number, since it is larger than the sum of its proper divisors (120246705690597).

221121031303323 is a wasteful number, since it uses less digits than its factorization.

221121031303323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9793853 (or 9793847 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 221121031303323 its reverse (323303130121122), we get a palindrome (544424161424445).

The spelling of 221121031303323 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, thirty-one million, three hundred three thousand, three hundred twenty-three".