221244031400023 has 4 divisors (see below), whose sum is σ = 221507731080720. Its totient is φ = 220980331719328.

The previous prime is 221244031399981. The next prime is 221244031400033. The reversal of 221244031400023 is 320004130442122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221244031400023 - 2²¹ = 221244029302871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221244031399964 and 221244031400000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221244031400033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131849839090 + ... + 131849840767.

It is an arithmetic number, because the mean of its divisors is an integer number (55376932770180).

Almost surely, 2^{221244031400023} is an apocalyptic number.

221244031400023 is a deficient number, since it is larger than the sum of its proper divisors (263699680697).

221244031400023 is an equidigital number, since it uses as much as digits as its factorization.

221244031400023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263699680696.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 221244031400023 its reverse (320004130442122), we get a palindrome (541248161842145).

The spelling of 221244031400023 in words is "two hundred twenty-one trillion, two hundred forty-four billion, thirty-one million, four hundred thousand, twenty-three".