34122020021 has 4 divisors (see below), whose sum is σ = 34390697472. Its totient is φ = 33853342572.

The previous prime is 34122019961. The next prime is 34122020059. The reversal of 34122020021 is 12002022143.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34122020021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34122040021) 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, 134338535 + ... + 134338788.

It is an arithmetic number, because the mean of its divisors is an integer number (8597674368).

Almost surely, 2^34122020021 is an apocalyptic number.

It is an amenable number.

34122020021 is a deficient number, since it is larger than the sum of its proper divisors (268677451).

34122020021 is a wasteful number, since it uses less digits than its factorization.

34122020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268677450.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 34122020021 its reverse (12002022143), we get a palindrome (46124042164).

The spelling of 34122020021 in words is "thirty-four billion, one hundred twenty-two million, twenty thousand, twenty-one".