21111300213 has 8 divisors (see below), whose sum is σ = 29804188608. Its totient is φ = 13246305984.

The previous prime is 21111300193. The next prime is 21111300233. The reversal of 21111300213 is 31200311112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21111300193) and next prime (21111300233).

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

It is not a de Polignac number, because 21111300213 - 2⁶ = 21111300149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21111300192 and 21111300201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111300233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206973481 + ... + 206973582.

It is an arithmetic number, because the mean of its divisors is an integer number (3725523576).

Almost surely, 2^21111300213 is an apocalyptic number.

It is an amenable number.

21111300213 is a deficient number, since it is larger than the sum of its proper divisors (8692888395).

21111300213 is a wasteful number, since it uses less digits than its factorization.

21111300213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413947083.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21111300213 its reverse (31200311112), we get a palindrome (52311611325).

The spelling of 21111300213 in words is "twenty-one billion, one hundred eleven million, three hundred thousand, two hundred thirteen".