12221123103021 has 8 divisors (see below), whose sum is σ = 18622663776064. Its totient is φ = 6983498916000.

The previous prime is 12221123103019. The next prime is 12221123103047. The reversal of 12221123103021 is 12030132112221.

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

It is not a de Polignac number, because 12221123103021 - 2¹ = 12221123103019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 581958243001 = 12221123103021 / (1 + 2 + 2 + 2 + 1 + 1 + 2 + 3 + 1 + 0 + 3 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221123503021) 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, 290979121480 + ... + 290979121521.

It is an arithmetic number, because the mean of its divisors is an integer number (2327832972008).

Almost surely, 2^{12221123103021} is an apocalyptic number.

It is an amenable number.

12221123103021 is a deficient number, since it is larger than the sum of its proper divisors (6401540673043).

12221123103021 is an equidigital number, since it uses as much as digits as its factorization.

12221123103021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581958243011.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 12221123103021 its reverse (12030132112221), we get a palindrome (24251255215242).

The spelling of 12221123103021 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-three million, one hundred three thousand, twenty-one".