20012221022 has 48 divisors (see below), whose sum is σ = 31396207920. Its totient is φ = 9562240512.

The previous prime is 20012220983. The next prime is 20012221063. The reversal of 20012221022 is 22012221002.

It is a junction number, because it is equal to n+sod(n) for n = 20012220988 and 20012221006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146074538 + ... + 146074674.

It is an arithmetic number, because the mean of its divisors is an integer number (654087665).

Almost surely, 2^20012221022 is an apocalyptic number.

20012221022 is a deficient number, since it is larger than the sum of its proper divisors (11383986898).

20012221022 is a wasteful number, since it uses less digits than its factorization.

20012221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20012221022 its reverse (22012221002), we get a palindrome (42024442024).

The spelling of 20012221022 in words is "twenty billion, twelve million, two hundred twenty-one thousand, twenty-two".