220121100212 has 48 divisors (see below), whose sum is σ = 428387334144. Its totient is φ = 98280000000.

The previous prime is 220121100169. The next prime is 220121100233. The reversal of 220121100212 is 212001121022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4490837 + ... + 4539587.

It is an arithmetic number, because the mean of its divisors is an integer number (8924736128).

Almost surely, 2^220121100212 is an apocalyptic number.

It is an amenable number.

220121100212 is a deficient number, since it is larger than the sum of its proper divisors (208266233932).

220121100212 is a wasteful number, since it uses less digits than its factorization.

220121100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51600 (or 51598 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220121100212 its reverse (212001121022), we get a palindrome (432122221234).

The spelling of 220121100212 in words is "two hundred twenty billion, one hundred twenty-one million, one hundred thousand, two hundred twelve".