21101122010203 has 8 divisors (see below), whose sum is σ = 21499415543088. Its totient is φ = 20702834372064.

The previous prime is 21101122010191. The next prime is 21101122010251. The reversal of 21101122010203 is 30201022110112.

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 21101122010203 - 2²¹ = 21101119913051 is a prime.

It is a super-2 number, since 2×21101122010203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21101122010503) 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, 6118900 + ... + 8924302.

It is an arithmetic number, because the mean of its divisors is an integer number (2687426942886).

Almost surely, 2^{21101122010203} is an apocalyptic number.

21101122010203 is a deficient number, since it is larger than the sum of its proper divisors (398293532885).

21101122010203 is a wasteful number, since it uses less digits than its factorization.

21101122010203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947373.

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

Adding to 21101122010203 its reverse (30201022110112), we get a palindrome (51302144120315).

Subtracting 21101122010203 from its reverse (30201022110112), we obtain a palindrome (9099900099909).

The spelling of 21101122010203 in words is "twenty-one trillion, one hundred one billion, one hundred twenty-two million, ten thousand, two hundred three".