20012100002222 has 4 divisors (see below), whose sum is σ = 30018150003336. Its totient is φ = 10006050001110.

The previous prime is 20012100002161. The next prime is 20012100002239. The reversal of 20012100002222 is 22220000121002.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 20012100002197 and 20012100002206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5003025000554 + ... + 5003025000557.

It is an arithmetic number, because the mean of its divisors is an integer number (7504537500834).

Almost surely, 2^{20012100002222} is an apocalyptic number.

20012100002222 is a deficient number, since it is larger than the sum of its proper divisors (10006050001114).

20012100002222 is a wasteful number, since it uses less digits than its factorization.

20012100002222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006050001113.

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

Adding to 20012100002222 its reverse (22220000121002), we get a palindrome (42232100123224).

The spelling of 20012100002222 in words is "twenty trillion, twelve billion, one hundred million, two thousand, two hundred twenty-two".