84021212 has 12 divisors (see below), whose sum is σ = 160404216. Its totient is φ = 38191440.

The previous prime is 84021181. The next prime is 84021221. The reversal of 84021212 is 21212048.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 954743 + ... + 954830.

It is an arithmetic number, because the mean of its divisors is an integer number (13367018).

Almost surely, 2^84021212 is an apocalyptic number.

It is an amenable number.

84021212 is a deficient number, since it is larger than the sum of its proper divisors (76383004).

84021212 is a wasteful number, since it uses less digits than its factorization.

84021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909588 (or 1909586 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 84021212 is about 9166.3085263371. The cubic root of 84021212 is about 437.9887753147.

The spelling of 84021212 in words is "eighty-four million, twenty-one thousand, two hundred twelve".