21211010213101 has 8 divisors (see below), whose sum is σ = 21312252097344. Its totient is φ = 21109855572960.

The previous prime is 21211010213089. The next prime is 21211010213143. The reversal of 21211010213101 is 10131201011212.

It is a happy number.

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 21211010213101 - 2⁵ = 21211010213069 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 (21211010213171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21323595 + ... + 22296136.

It is an arithmetic number, because the mean of its divisors is an integer number (2664031512168).

Almost surely, 2^{21211010213101} is an apocalyptic number.

It is an amenable number.

21211010213101 is a deficient number, since it is larger than the sum of its proper divisors (101241884243).

21211010213101 is a wasteful number, since it uses less digits than its factorization.

21211010213101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43622051.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 21211010213101 its reverse (10131201011212), we get a palindrome (31342211224313).

The spelling of 21211010213101 in words is "twenty-one trillion, two hundred eleven billion, ten million, two hundred thirteen thousand, one hundred one".