21110211219 has 16 divisors (see below), whose sum is σ = 28203152384. Its totient is φ = 14045400000.

The previous prime is 21110211217. The next prime is 21110211229. The reversal of 21110211219 is 91211201112.

It is not a de Polignac number, because 21110211219 - 2¹ = 21110211217 is a prime.

It is a super-2 number, since 2×21110211219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21110211195 and 21110211204.

It is not an unprimeable number, because it can be changed into a prime (21110211211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5745567 + ... + 5749239.

It is an arithmetic number, because the mean of its divisors is an integer number (1762697024).

Almost surely, 2^21110211219 is an apocalyptic number.

21110211219 is a deficient number, since it is larger than the sum of its proper divisors (7092941165).

21110211219 is a wasteful number, since it uses less digits than its factorization.

21110211219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6978.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 21110211219 in words is "twenty-one billion, one hundred ten million, two hundred eleven thousand, two hundred nineteen".