21211402302103 has 16 divisors (see below), whose sum is σ = 22999740926400. Its totient is φ = 19445787039744.

The previous prime is 21211402302091. The next prime is 21211402302107. The reversal of 21211402302103 is 30120320411212.

It is a de Polignac number, because none of the positive numbers 2^k-21211402302103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21211402302107) 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, 5553976 + ... + 8559757.

It is an arithmetic number, because the mean of its divisors is an integer number (1437483807900).

Almost surely, 2^{21211402302103} is an apocalyptic number.

21211402302103 is a deficient number, since it is larger than the sum of its proper divisors (1788338624297).

21211402302103 is a wasteful number, since it uses less digits than its factorization.

21211402302103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14114538.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21211402302103 its reverse (30120320411212), we get a palindrome (51331722713315).

The spelling of 21211402302103 in words is "twenty-one trillion, two hundred eleven billion, four hundred two million, three hundred two thousand, one hundred three".