21014214 has 16 divisors (see below), whose sum is σ = 45261552. Its totient is φ = 6465888.

The previous prime is 21014179. The next prime is 21014233. The reversal of 21014214 is 41241012.

It is a junction number, because it is equal to n+sod(n) for n = 21014193 and 21014202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134629 + ... + 134784.

It is an arithmetic number, because the mean of its divisors is an integer number (2828847).

Almost surely, 2^21014214 is an apocalyptic number.

21014214 is an abundant number, since it is smaller than the sum of its proper divisors (24247338).

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

21014214 is a wasteful number, since it uses less digits than its factorization.

21014214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269431.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 21014214 is about 4584.1263071604. The cubic root of 21014214 is about 275.9546501839.

Adding to 21014214 its reverse (41241012), we get a palindrome (62255226).

The spelling of 21014214 in words is "twenty-one million, fourteen thousand, two hundred fourteen".