21032112030101 has 4 divisors (see below), whose sum is σ = 21600547490412. Its totient is φ = 20463676569792.

The previous prime is 21032112030073. The next prime is 21032112030119. The reversal of 21032112030101 is 10103021123012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19500084492100 + 1532027538001 = 4415890^2 + 1237751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21032112030101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21032112030101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032112030121) 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, 284217730100 + ... + 284217730173.

It is an arithmetic number, because the mean of its divisors is an integer number (5400136872603).

Almost surely, 2^{21032112030101} is an apocalyptic number.

It is an amenable number.

21032112030101 is a deficient number, since it is larger than the sum of its proper divisors (568435460311).

21032112030101 is an equidigital number, since it uses as much as digits as its factorization.

21032112030101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568435460310.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21032112030101 its reverse (10103021123012), we get a palindrome (31135133153113).

The spelling of 21032112030101 in words is "twenty-one trillion, thirty-two billion, one hundred twelve million, thirty thousand, one hundred one".