21103012202231 has 8 divisors (see below), whose sum is σ = 22979686609200. Its totient is φ = 19302936750720.

The previous prime is 21103012202183. The next prime is 21103012202257. The reversal of 21103012202231 is 13220221030112.

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 21103012202231 - 2¹⁰ = 21103012201207 is a prime.

It is a super-2 number, since 2×21103012202231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21103012204231) 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, 19149738290 + ... + 19149739391.

It is an arithmetic number, because the mean of its divisors is an integer number (2872460826150).

Almost surely, 2^{21103012202231} is an apocalyptic number.

21103012202231 is a deficient number, since it is larger than the sum of its proper divisors (1876674406969).

21103012202231 is a wasteful number, since it uses less digits than its factorization.

21103012202231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38299477729.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21103012202231 its reverse (13220221030112), we get a palindrome (34323233232343).

The spelling of 21103012202231 in words is "twenty-one trillion, one hundred three billion, twelve million, two hundred two thousand, two hundred thirty-one".