21103102321213 has 8 divisors (see below), whose sum is σ = 23022444264480. Its totient is φ = 19183906727280.

The previous prime is 21103102321211. The next prime is 21103102321237. The reversal of 21103102321213 is 31212320130112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21103102321213 - 2¹ = 21103102321211 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 (21103102321211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36285718 + ... + 36862711.

It is an arithmetic number, because the mean of its divisors is an integer number (2877805533060).

Almost surely, 2^{21103102321213} is an apocalyptic number.

It is an amenable number.

21103102321213 is a deficient number, since it is larger than the sum of its proper divisors (1919341943267).

21103102321213 is a wasteful number, since it uses less digits than its factorization.

21103102321213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73174667.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21103102321213 its reverse (31212320130112), we get a palindrome (52315422451325).

The spelling of 21103102321213 in words is "twenty-one trillion, one hundred three billion, one hundred two million, three hundred twenty-one thousand, two hundred thirteen".