21122111210203 has 8 divisors (see below), whose sum is σ = 21130024649120. Its totient is φ = 21114198141120.

The previous prime is 21122111210183. The next prime is 21122111210231. The reversal of 21122111210203 is 30201211122112.

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 21122111210203 - 2⁹ = 21122111209691 is a prime.

It is a super-2 number, since 2×21122111210203² (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 (21122111217203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174619378 + ... + 174740296.

It is an arithmetic number, because the mean of its divisors is an integer number (2641253081140).

Almost surely, 2^{21122111210203} is an apocalyptic number.

21122111210203 is a deficient number, since it is larger than the sum of its proper divisors (7913438917).

21122111210203 is a wasteful number, since it uses less digits than its factorization.

21122111210203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184917.

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

Adding to 21122111210203 its reverse (30201211122112), we get a palindrome (51323322332315).

The spelling of 21122111210203 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred eleven million, two hundred ten thousand, two hundred three".