20212244430 has 128 divisors (see below), whose sum is σ = 56902487040. Its totient is φ = 4499573760.

The previous prime is 20212244419. The next prime is 20212244461. The reversal of 20212244430 is 3444221202.

It is a self number, because there is not a number n which added to its sum of digits gives 20212244430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1244160 + ... + 1260300.

It is an arithmetic number, because the mean of its divisors is an integer number (444550680).

Almost surely, 2^20212244430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20212244430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28451243520).

20212244430 is an abundant number, since it is smaller than the sum of its proper divisors (36690242610).

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

20212244430 is a wasteful number, since it uses less digits than its factorization.

20212244430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16314.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20212244430 its reverse (3444221202), we get a palindrome (23656465632).

The spelling of 20212244430 in words is "twenty billion, two hundred twelve million, two hundred forty-four thousand, four hundred thirty".