21111101022203 has 2 divisors, whose sum is σ = 21111101022204. Its totient is φ = 21111101022202.

The previous prime is 21111101022173. The next prime is 21111101022229. The reversal of 21111101022203 is 30222010111112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21111101022203 - 2⁸ = 21111101021947 is a prime.

It is not a weakly prime, because it can be changed into another prime (21111101022103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555550511101 + 10555550511102.

It is an arithmetic number, because the mean of its divisors is an integer number (10555550511102).

Almost surely, 2^{21111101022203} is an apocalyptic number.

21111101022203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21111101022203 is an equidigital number, since it uses as much as digits as its factorization.

21111101022203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21111101022203 its reverse (30222010111112), we get a palindrome (51333111133315).

It can be divided in two parts, 2111110 and 1022203, that added together give a palindrome (3133313).

The spelling of 21111101022203 in words is "twenty-one trillion, one hundred eleven billion, one hundred one million, twenty-two thousand, two hundred three".