20212221102202 has 16 divisors (see below), whose sum is σ = 30417482965824. Its totient is φ = 10073099160000.

The previous prime is 20212221102173. The next prime is 20212221102221. The reversal of 20212221102202 is 20220112221202.

It is a self number, because there is not a number n which added to its sum of digits gives 20212221102202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8725374 + ... + 10796137.

It is an arithmetic number, because the mean of its divisors is an integer number (1901092685364).

Almost surely, 2^{20212221102202} is an apocalyptic number.

20212221102202 is a deficient number, since it is larger than the sum of its proper divisors (10205261863622).

20212221102202 is a wasteful number, since it uses less digits than its factorization.

20212221102202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19523205.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20212221102202 its reverse (20220112221202), we get a palindrome (40432333323404).

The spelling of 20212221102202 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-one million, one hundred two thousand, two hundred two".