34912021 has 4 divisors (see below), whose sum is σ = 35062092. Its totient is φ = 34761952.

The previous prime is 34912019. The next prime is 34912039. The reversal of 34912021 is 12021943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12021943 = 173 ⋅69491.

It can be written as a sum of positive squares in 2 ways, for example, as 22905796 + 12006225 = 4786^2 + 3465^2 .

It is a cyclic number.

It is not a de Polignac number, because 34912021 - 2¹ = 34912019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34911983 and 34912001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34912051) 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, 74686 + ... + 75151.

It is an arithmetic number, because the mean of its divisors is an integer number (8765523).

Almost surely, 2^34912021 is an apocalyptic number.

It is an amenable number.

34912021 is a deficient number, since it is larger than the sum of its proper divisors (150071).

34912021 is a wasteful number, since it uses less digits than its factorization.

34912021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150070.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 34912021 is about 5908.6395219204. The cubic root of 34912021 is about 326.8323199579.

Adding to 34912021 its reverse (12021943), we get a palindrome (46933964).

The spelling of 34912021 in words is "thirty-four million, nine hundred twelve thousand, twenty-one".