20121322222 has 8 divisors (see below), whose sum is σ = 30314944296. Its totient is φ = 10016340792.

The previous prime is 20121322211. The next prime is 20121322279. The reversal of 20121322222 is 22222312102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20121322222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22159593 + ... + 22160500.

It is an arithmetic number, because the mean of its divisors is an integer number (3789368037).

Almost surely, 2^20121322222 is an apocalyptic number.

20121322222 is a deficient number, since it is larger than the sum of its proper divisors (10193622074).

20121322222 is a wasteful number, since it uses less digits than its factorization.

20121322222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44320322.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20121322222 its reverse (22222312102), we get a palindrome (42343634324).

The spelling of 20121322222 in words is "twenty billion, one hundred twenty-one million, three hundred twenty-two thousand, two hundred twenty-two".