220021214 has 16 divisors (see below), whose sum is σ = 381725568. Its totient is φ = 93158232.

The previous prime is 220021183. The next prime is 220021253. The reversal of 220021214 is 412120022.

It is a super-2 number, since 2×220021214² = 96818669220067592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

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, 93512 + ... + 95835.

It is an arithmetic number, because the mean of its divisors is an integer number (23857848).

Almost surely, 2^220021214 is an apocalyptic number.

220021214 is a deficient number, since it is larger than the sum of its proper divisors (161704354).

220021214 is a wasteful number, since it uses less digits than its factorization.

220021214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189439.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 220021214 is about 14833.1120807469. The cubic root of 220021214 is about 603.7004768293.

Adding to 220021214 its reverse (412120022), we get a palindrome (632141236).

The spelling of 220021214 in words is "two hundred twenty million, twenty-one thousand, two hundred fourteen".