20530400222 has 32 divisors (see below), whose sum is σ = 31851436032. Its totient is φ = 9919413504.

The previous prime is 20530400213. The next prime is 20530400249. The reversal of 20530400222 is 22200403502.

20530400222 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 20530400194 and 20530400203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3414743 + ... + 3420749.

It is an arithmetic number, because the mean of its divisors is an integer number (995357376).

Almost surely, 2^20530400222 is an apocalyptic number.

20530400222 is a deficient number, since it is larger than the sum of its proper divisors (11321035810).

20530400222 is a wasteful number, since it uses less digits than its factorization.

20530400222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6512.

The product of its (nonzero) digits is 960, while the sum is 20.

Adding to 20530400222 its reverse (22200403502), we get a palindrome (42730803724).

The spelling of 20530400222 in words is "twenty billion, five hundred thirty million, four hundred thousand, two hundred twenty-two".