21101201212003 has 8 divisors (see below), whose sum is σ = 23019536707776. Its totient is φ = 19182873129000.

The previous prime is 21101201211997. The next prime is 21101201212009. The reversal of 21101201212003 is 30021210210112.

It is an interprime number because it is at equal distance from previous prime (21101201211997) and next prime (21101201212009).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21101201212003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21101201212009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5298928 + ... + 8383378.

It is an arithmetic number, because the mean of its divisors is an integer number (2877442088472).

Almost surely, 2^{21101201212003} is an apocalyptic number.

21101201212003 is a deficient number, since it is larger than the sum of its proper divisors (1918335495773).

21101201212003 is a wasteful number, since it uses less digits than its factorization.

21101201212003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706385.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21101201212003 its reverse (30021210210112), we get a palindrome (51122411422115).

The spelling of 21101201212003 in words is "twenty-one trillion, one hundred one billion, two hundred one million, two hundred twelve thousand, three".