21410214211 has 4 divisors (see below), whose sum is σ = 21412128424. Its totient is φ = 21408300000.

The previous prime is 21410214197. The next prime is 21410214251. The reversal of 21410214211 is 11241201412.

It is a happy number.

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 21410214211 - 2¹⁹ = 21409689923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21410214251) 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, 940230 + ... + 962731.

It is an arithmetic number, because the mean of its divisors is an integer number (5353032106).

Almost surely, 2^21410214211 is an apocalyptic number.

21410214211 is a deficient number, since it is larger than the sum of its proper divisors (1914213).

21410214211 is a wasteful number, since it uses less digits than its factorization.

21410214211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914212.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21410214211 its reverse (11241201412), we get a palindrome (32651415623).

The spelling of 21410214211 in words is "twenty-one billion, four hundred ten million, two hundred fourteen thousand, two hundred eleven".