2121396 has 24 divisors (see below), whose sum is σ = 5241600. Its totient is φ = 665472.

The previous prime is 2121389. The next prime is 2121403. The reversal of 2121396 is 6931212.

It is an interprime number because it is at equal distance from previous prime (2121389) and next prime (2121403).

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 2¹⁹ + 1 + 3¹³ + 9³ + 6 .

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, 4996 + ... + 5403.

It is an arithmetic number, because the mean of its divisors is an integer number (218400).

2^2121396 is an apocalyptic number.

It is an amenable number.

2121396 is an abundant number, since it is smaller than the sum of its proper divisors (3120204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121396 is a wasteful number, since it uses less digits than its factorization.

2121396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10423 (or 10421 counting only the distinct ones).

The product of its digits is 648, while the sum is 24.

The square root of 2121396 is about 1456.5012873321. The cubic root of 2121396 is about 128.4913568452.

The spelling of 2121396 in words is "two million, one hundred twenty-one thousand, three hundred ninety-six".