1212197 has 8 divisors (see below), whose sum is σ = 1395456. Its totient is φ = 1031472.

The previous prime is 1212191. The next prime is 1212199. The reversal of 1212197 is 7912121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212197 - 2¹⁶ = 1146661 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548 + ... + 1650.

It is an arithmetic number, because the mean of its divisors is an integer number (174432).

2^1212197 is an apocalyptic number.

It is an amenable number.

1212197 is a deficient number, since it is larger than the sum of its proper divisors (183259).

1212197 is a wasteful number, since it uses less digits than its factorization.

1212197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267.

The product of its digits is 252, while the sum is 23.

The square root of 1212197 is about 1100.9981834681. The cubic root of 1212197 is about 106.6246785695.

The spelling of 1212197 in words is "one million, two hundred twelve thousand, one hundred ninety-seven".