20022221238 has 32 divisors (see below), whose sum is σ = 42127430400. Its totient is φ = 6334710816.

The previous prime is 20022221237. The next prime is 20022221243. The reversal of 20022221238 is 83212222002.

20022221238 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022221237) 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 15 ways as a sum of consecutive naturals, for example, 964906 + ... + 985437.

It is an arithmetic number, because the mean of its divisors is an integer number (1316482200).

Almost surely, 2^20022221238 is an apocalyptic number.

20022221238 is an abundant number, since it is smaller than the sum of its proper divisors (22105209162).

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

20022221238 is a wasteful number, since it uses less digits than its factorization.

20022221238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950436.

The product of its (nonzero) digits is 1536, while the sum is 24.

The spelling of 20022221238 in words is "twenty billion, twenty-two million, two hundred twenty-one thousand, two hundred thirty-eight".