220123211284 has 6 divisors (see below), whose sum is σ = 385215619754. Its totient is φ = 110061605640.

The previous prime is 220123211233. The next prime is 220123211291. The reversal of 220123211284 is 482112321022.

220123211284 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 126259408900 + 93863802384 = 355330^2 + 306372^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27515401407 + ... + 27515401414.

Almost surely, 2^220123211284 is an apocalyptic number.

It is an amenable number.

220123211284 is a deficient number, since it is larger than the sum of its proper divisors (165092408470).

220123211284 is a wasteful number, since it uses less digits than its factorization.

220123211284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55030802825 (or 55030802823 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The spelling of 220123211284 in words is "two hundred twenty billion, one hundred twenty-three million, two hundred eleven thousand, two hundred eighty-four".