1223220543101 has 8 divisors (see below), whose sum is σ = 1233405889920. Its totient is φ = 1213072437888.

The previous prime is 1223220543037. The next prime is 1223220543143. The reversal of 1223220543101 is 1013450223221.

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 1223220543101 - 2⁶ = 1223220543037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223220543301) 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, 9244436 + ... + 9375821.

It is an arithmetic number, because the mean of its divisors is an integer number (154175736240).

Almost surely, 2^{1223220543101} is an apocalyptic number.

It is an amenable number.

1223220543101 is a deficient number, since it is larger than the sum of its proper divisors (10185346819).

1223220543101 is a wasteful number, since it uses less digits than its factorization.

1223220543101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18620803.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 1223220543101 its reverse (1013450223221), we get a palindrome (2236670766322).

The spelling of 1223220543101 in words is "one trillion, two hundred twenty-three billion, two hundred twenty million, five hundred forty-three thousand, one hundred one".