21032122 has 8 divisors (see below), whose sum is σ = 31873716. Its totient is φ = 10407552.

The previous prime is 21032119. The next prime is 21032153. The reversal of 21032122 is 22123012.

It can be written as a sum of positive squares in 2 ways, for example, as 20169081 + 863041 = 4491^2 + 929^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54013 + ... + 54400.

Almost surely, 2^21032122 is an apocalyptic number.

21032122 is a deficient number, since it is larger than the sum of its proper divisors (10841594).

21032122 is a wasteful number, since it uses less digits than its factorization.

21032122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108512.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 21032122 is about 4586.0791532637. The cubic root of 21032122 is about 276.0330160742.

Adding to 21032122 its reverse (22123012), we get a palindrome (43155134).

It can be divided in two parts, 2103 and 2122, that added together give a square (4225 = 65²).

The spelling of 21032122 in words is "twenty-one million, thirty-two thousand, one hundred twenty-two".