20120121212222 has 8 divisors (see below), whose sum is σ = 30243188462400. Its totient is φ = 10039058391424.

The previous prime is 20120121212221. The next prime is 20120121212227. The reversal of 20120121212222 is 22221212102102.

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 = 20120121212194 and 20120121212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120121212221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10501106147 + ... + 10501108062.

It is an arithmetic number, because the mean of its divisors is an integer number (3780398557800).

Almost surely, 2^{20120121212222} is an apocalyptic number.

20120121212222 is a deficient number, since it is larger than the sum of its proper divisors (10123067250178).

20120121212222 is a wasteful number, since it uses less digits than its factorization.

20120121212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21002214690.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20120121212222 its reverse (22221212102102), we get a palindrome (42341333314324).

The spelling of 20120121212222 in words is "twenty trillion, one hundred twenty billion, one hundred twenty-one million, two hundred twelve thousand, two hundred twenty-two".