1212116 has 6 divisors (see below), whose sum is σ = 2121210. Its totient is φ = 606056.

The previous prime is 1212103. The next prime is 1212119. The reversal of 1212116 is 6112121.

It can be written as a sum of positive squares in only one way, i.e., 1210000 + 2116 = 1100^2 + 46^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1212116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151511 + ... + 151518.

It is an arithmetic number, because the mean of its divisors is an integer number (353535).

2^1212116 is an apocalyptic number.

It is an amenable number.

1212116 is a deficient number, since it is larger than the sum of its proper divisors (909094).

1212116 is a wasteful number, since it uses less digits than its factorization.

1212116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303033 (or 303031 counting only the distinct ones).

The product of its digits is 24, while the sum is 14.

The square root of 1212116 is about 1100.9613980517. The cubic root of 1212116 is about 106.6223036004.

Adding to 1212116 its reverse (6112121), we get a palindrome (7324237).

It can be divided in two parts, 121 and 2116, that multiplied together give a square (256036 = 506²).

The spelling of 1212116 in words is "one million, two hundred twelve thousand, one hundred sixteen".