21221121120103 has 8 divisors (see below), whose sum is σ = 22470375648240. Its totient is φ = 19971972512640.

The previous prime is 21221121120037. The next prime is 21221121120139. The reversal of 21221121120103 is 30102112112212.

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 21221121120103 - 2²⁹ = 21220584249191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21221121120193) 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, 26067493 + ... + 26869246.

It is an arithmetic number, because the mean of its divisors is an integer number (2808796956030).

Almost surely, 2^{21221121120103} is an apocalyptic number.

21221121120103 is a deficient number, since it is larger than the sum of its proper divisors (1249254528137).

21221121120103 is a wasteful number, since it uses less digits than its factorization.

21221121120103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52960337.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 21221121120103 its reverse (30102112112212), we get a palindrome (51323233232315).

The spelling of 21221121120103 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred twenty thousand, one hundred three".