21111022202103 has 16 divisors (see below), whose sum is σ = 31585247743200. Its totient is φ = 13934668118400.

The previous prime is 21111022202069. The next prime is 21111022202183. The reversal of 21111022202103 is 30120222011112.

It is not a de Polignac number, because 21111022202103 - 2¹⁴ = 21111022185719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111022202183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3870738418 + ... + 3870743871.

It is an arithmetic number, because the mean of its divisors is an integer number (1974077983950).

Almost surely, 2^{21111022202103} is an apocalyptic number.

21111022202103 is a deficient number, since it is larger than the sum of its proper divisors (10474225541097).

21111022202103 is a wasteful number, since it uses less digits than its factorization.

21111022202103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7741482399 (or 7741482393 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21111022202103 its reverse (30120222011112), we get a palindrome (51231244213215).

The spelling of 21111022202103 in words is "twenty-one trillion, one hundred eleven billion, twenty-two million, two hundred two thousand, one hundred three".