21101221202003 has 8 divisors (see below), whose sum is σ = 21285181483440. Its totient is φ = 20917720248480.

The previous prime is 21101221201987. The next prime is 21101221202059. The reversal of 21101221202003 is 30020212210112.

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 21101221202003 - 2⁴ = 21101221201987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21101221202203) 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, 114739700 + ... + 114923457.

It is an arithmetic number, because the mean of its divisors is an integer number (2660647685430).

Almost surely, 2^{21101221202003} is an apocalyptic number.

21101221202003 is a deficient number, since it is larger than the sum of its proper divisors (183960281437).

21101221202003 is a wasteful number, since it uses less digits than its factorization.

21101221202003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229663957.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21101221202003 its reverse (30020212210112), we get a palindrome (51121433412115).

The spelling of 21101221202003 in words is "twenty-one trillion, one hundred one billion, two hundred twenty-one million, two hundred two thousand, three".