21213310032106 has 16 divisors (see below), whose sum is σ = 31866319094688. Its totient is φ = 10591204582000.

The previous prime is 21213310032071. The next prime is 21213310032151. The reversal of 21213310032106 is 60123001331212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50209761 + ... + 50630491.

It is an arithmetic number, because the mean of its divisors is an integer number (1991644943418).

Almost surely, 2^{21213310032106} is an apocalyptic number.

21213310032106 is a deficient number, since it is larger than the sum of its proper divisors (10653009062582).

21213310032106 is a wasteful number, since it uses less digits than its factorization.

21213310032106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457397.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21213310032106 its reverse (60123001331212), we get a palindrome (81336311363318).

The spelling of 21213310032106 in words is "twenty-one trillion, two hundred thirteen billion, three hundred ten million, thirty-two thousand, one hundred six".