221221140554023 has 8 divisors (see below), whose sum is σ = 222069900031056. Its totient is φ = 220373977992000.

The previous prime is 221221140553991. The next prime is 221221140554093. The reversal of 221221140554023 is 320455041122122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221221140554023 - 2⁵ = 221221140553991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221221140554023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221221140554093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398951161 + ... + 399505282.

It is an arithmetic number, because the mean of its divisors is an integer number (27758737503882).

Almost surely, 2^{221221140554023} is an apocalyptic number.

221221140554023 is a deficient number, since it is larger than the sum of its proper divisors (848759477033).

221221140554023 is an equidigital number, since it uses as much as digits as its factorization.

221221140554023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798457505.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 221221140554023 its reverse (320455041122122), we get a palindrome (541676181676145).

The spelling of 221221140554023 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, one hundred forty million, five hundred fifty-four thousand, twenty-three".