20213122430 has 16 divisors (see below), whose sum is σ = 37965517344. Its totient is φ = 7733716320.

The previous prime is 20213122427. The next prime is 20213122439. The reversal of 20213122430 is 3422131202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213122439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43941341 + ... + 43941800.

It is an arithmetic number, because the mean of its divisors is an integer number (2372844834).

Almost surely, 2^20213122430 is an apocalyptic number.

20213122430 is a deficient number, since it is larger than the sum of its proper divisors (17752394914).

20213122430 is a wasteful number, since it uses less digits than its factorization.

20213122430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87883171.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20213122430 its reverse (3422131202), we get a palindrome (23635253632).

The spelling of 20213122430 in words is "twenty billion, two hundred thirteen million, one hundred twenty-two thousand, four hundred thirty".