2212691 has 4 divisors (see below), whose sum is σ = 2382912. Its totient is φ = 2042472.

The previous prime is 2212673. The next prime is 2212699. The reversal of 2212691 is 1962122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1962122 = 2 ⋅981061.

It is a cyclic number.

It is not a de Polignac number, because 2212691 - 2⁶ = 2212627 is a prime.

It is a super-2 number, since 2×2212691² = 9792002922962, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2⁹ + 2¹³ + 1 + 2¹⁹ + 6⁸ + 9² + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85091 + ... + 85116.

It is an arithmetic number, because the mean of its divisors is an integer number (595728).

2^2212691 is an apocalyptic number.

2212691 is a deficient number, since it is larger than the sum of its proper divisors (170221).

2212691 is a wasteful number, since it uses less digits than its factorization.

2212691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170220.

The product of its digits is 432, while the sum is 23.

The square root of 2212691 is about 1487.5116806264. The cubic root of 2212691 is about 130.3087533020.

The spelling of 2212691 in words is "two million, two hundred twelve thousand, six hundred ninety-one".