21220101110203 has 2 divisors, whose sum is σ = 21220101110204. Its totient is φ = 21220101110202.

The previous prime is 21220101110101. The next prime is 21220101110269. The reversal of 21220101110203 is 30201110102212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21220101110203 - 2¹⁷ = 21220100979131 is a prime.

It is a super-2 number, since 2×21220101110203² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21220101110003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610050555101 + 10610050555102.

It is an arithmetic number, because the mean of its divisors is an integer number (10610050555102).

Almost surely, 2^{21220101110203} is an apocalyptic number.

21220101110203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220101110203 is an equidigital number, since it uses as much as digits as its factorization.

21220101110203 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 16.

Adding to 21220101110203 its reverse (30201110102212), we get a palindrome (51421211212415).

The spelling of 21220101110203 in words is "twenty-one trillion, two hundred twenty billion, one hundred one million, one hundred ten thousand, two hundred three".