2121066 has 20 divisors (see below), whose sum is σ = 4753122. Its totient is φ = 706968.

The previous prime is 2121043. The next prime is 2121121. The reversal of 2121066 is 6601212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1390041 + 731025 = 1179^2 + 855^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6385 + ... + 6708.

2^2121066 is an apocalyptic number.

2121066 is an abundant number, since it is smaller than the sum of its proper divisors (2632056).

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

2121066 is a wasteful number, since it uses less digits than its factorization.

2121066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13107 (or 13098 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2121066 is about 1456.3879977533. The cubic root of 2121066 is about 128.4846938826.

Adding to 2121066 its reverse (6601212), we get a palindrome (8722278).

The spelling of 2121066 in words is "two million, one hundred twenty-one thousand, sixty-six".