220012012111221 has 48 divisors (see below), whose sum is σ = 347194731566592. Its totient is φ = 133144851945600.

The previous prime is 220012012111159. The next prime is 220012012111247. The reversal of 220012012111221 is 122111210210022.

220012012111221 is a `hidden beast` number, since 2 + 200 + 120 + 12 + 111 + 221 = 666.

It is not a de Polignac number, because 220012012111221 - 2²⁶ = 220011945002357 is a prime.

It is a super-2 number, since 2×220012012111221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220012012111194 and 220012012111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220012012111271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 442919631 + ... + 443416083.

It is an arithmetic number, because the mean of its divisors is an integer number (7233223574304).

Almost surely, 2^{220012012111221} is an apocalyptic number.

It is an amenable number.

220012012111221 is a deficient number, since it is larger than the sum of its proper divisors (127182719455371).

220012012111221 is a wasteful number, since it uses less digits than its factorization.

220012012111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503034 (or 503031 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 220012012111221 its reverse (122111210210022), we get a palindrome (342123222321243).

It can be divided in two parts, 2200120 and 12111221, that added together give a palindrome (14311341).

The spelling of 220012012111221 in words is "two hundred twenty trillion, twelve billion, twelve million, one hundred eleven thousand, two hundred twenty-one".