20121022222 has 8 divisors (see below), whose sum is σ = 34493180976. Its totient is φ = 8623295232.

The previous prime is 20121022213. The next prime is 20121022241. The reversal of 20121022222 is 22222012102.

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

It is a junction number, because it is equal to n+sod(n) for n = 20121022196 and 20121022205.

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, 718607923 + ... + 718607950.

It is an arithmetic number, because the mean of its divisors is an integer number (4311647622).

Almost surely, 2^20121022222 is an apocalyptic number.

20121022222 is a deficient number, since it is larger than the sum of its proper divisors (14372158754).

20121022222 is a wasteful number, since it uses less digits than its factorization.

20121022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437215882.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20121022222 its reverse (22222012102), we get a palindrome (42343034324).

The spelling of 20121022222 in words is "twenty billion, one hundred twenty-one million, twenty-two thousand, two hundred twenty-two".