20011022206 has 32 divisors (see below), whose sum is σ = 35595064512. Its totient is φ = 8258319360.

The previous prime is 20011022197. The next prime is 20011022237. The reversal of 20011022206 is 60222011002.

It is a self number, because there is not a number n which added to its sum of digits gives 20011022206.

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, 148885 + ... + 249376.

It is an arithmetic number, because the mean of its divisors is an integer number (1112345766).

Almost surely, 2^20011022206 is an apocalyptic number.

20011022206 is a deficient number, since it is larger than the sum of its proper divisors (15584042306).

20011022206 is a wasteful number, since it uses less digits than its factorization.

20011022206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398404.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20011022206 its reverse (60222011002), we get a palindrome (80233033208).

The spelling of 20011022206 in words is "twenty billion, eleven million, twenty-two thousand, two hundred six".