20012021234 has 8 divisors (see below), whose sum is σ = 30440821248. Its totient is φ = 9865080820.

The previous prime is 20012021233. The next prime is 20012021261. The reversal of 20012021234 is 43212021002.

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

It is not an unprimeable number, because it can be changed into a prime (20012021233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70464722 + ... + 70465005.

It is an arithmetic number, because the mean of its divisors is an integer number (3805102656).

Almost surely, 2^20012021234 is an apocalyptic number.

20012021234 is a deficient number, since it is larger than the sum of its proper divisors (10428800014).

20012021234 is a wasteful number, since it uses less digits than its factorization.

20012021234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140929800.

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

Adding to 20012021234 its reverse (43212021002), we get a palindrome (63224042236).

The spelling of 20012021234 in words is "twenty billion, twelve million, twenty-one thousand, two hundred thirty-four".