21102310113211 has 4 divisors (see below), whose sum is σ = 21107051144424. Its totient is φ = 21097569082000.

The previous prime is 21102310113193. The next prime is 21102310113257. The reversal of 21102310113211 is 11231101320112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21102310113211 - 2²¹ = 21102308016059 is a prime.

It is a super-2 number, since 2×21102310113211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21102310113611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2370508930 + ... + 2370517831.

It is an arithmetic number, because the mean of its divisors is an integer number (5276762786106).

Almost surely, 2^{21102310113211} is an apocalyptic number.

21102310113211 is a deficient number, since it is larger than the sum of its proper divisors (4741031213).

21102310113211 is an equidigital number, since it uses as much as digits as its factorization.

21102310113211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4741031212.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 21102310113211 its reverse (11231101320112), we get a palindrome (32333411433323).

The spelling of 21102310113211 in words is "twenty-one trillion, one hundred two billion, three hundred ten million, one hundred thirteen thousand, two hundred eleven".