1201216 has 21 divisors (see below), whose sum is σ = 2401189.
Its totient is φ = 596224.
The previous prime is 1201201. The next prime is 1201217. The reversal of 1201216 is 6121021.
The square root of 1201216 is 1096.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in only one way, i.e., 705600 + 495616 = 840^2 + 704^2
It is a hoax number, since the sum of its digits (13) coincides with the sum of the digits of its distinct prime factors.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 1201196 and 1201205.
It is not an unprimeable number, because it can be changed into a prime (1201217) by changing a digit.
It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8700 + ... + 8836.
21201216 is an apocalyptic number.
1201216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.
1201216 is the 1096-th square number.
It is an amenable number.
1201216 is a deficient number, since it is larger than the sum of its proper divisors (1199973).
1201216 is an frugal number, since it uses more digits than its factorization.
1201216 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 286 (or 139 counting only the distinct ones).
The product of its (nonzero) digits is 24, while the sum is 13.
The cubic root of 1201216 is about 106.3017390458.
The spelling of 1201216 in words is "one million, two hundred one thousand, two hundred sixteen".