21214211310 has 32 divisors (see below), whose sum is σ = 56571230880. Its totient is φ = 5657122944.

The previous prime is 21214211287. The next prime is 21214211387. The reversal of 21214211310 is 1311241212.

21214211310 is a `hidden beast` number, since 212 + 1 + 421 + 1 + 31 + 0 = 666.

It is a super-3 number, since 3×21214211310³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39285307 + ... + 39285846.

It is an arithmetic number, because the mean of its divisors is an integer number (1767850965).

Almost surely, 2^21214211310 is an apocalyptic number.

21214211310 is an abundant number, since it is smaller than the sum of its proper divisors (35357019570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21214211310 is a wasteful number, since it uses less digits than its factorization.

21214211310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78571169 (or 78571163 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21214211310 its reverse (1311241212), we get a palindrome (22525452522).

The spelling of 21214211310 in words is "twenty-one billion, two hundred fourteen million, two hundred eleven thousand, three hundred ten".