220121121112012 has 24 divisors (see below), whose sum is σ = 386885552891040. Its totient is φ = 109583005150080.

The previous prime is 220121121111979. The next prime is 220121121112037. The reversal of 220121121112012 is 210211121121022.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75243312 + ... + 78114007.

It is an arithmetic number, because the mean of its divisors is an integer number (16120231370460).

Almost surely, 2^{220121121112012} is an apocalyptic number.

It is an amenable number.

220121121112012 is a deficient number, since it is larger than the sum of its proper divisors (166764431779028).

220121121112012 is a wasteful number, since it uses less digits than its factorization.

220121121112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153358881 (or 153358879 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 220121121112012 its reverse (210211121121022), we get a palindrome (430332242233034).

The spelling of 220121121112012 in words is "two hundred twenty trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, twelve".