222201120012021 has 24 divisors (see below), whose sum is σ = 320999145044760. Its totient is φ = 148114709876736.

The previous prime is 222201120011939. The next prime is 222201120012029. The reversal of 222201120012021 is 120210021102222.

It is a happy number.

222201120012021 is a `hidden beast` number, since 222 + 201 + 1 + 200 + 1 + 20 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 720826470225 + 221480293541796 = 849015^2 + 14882214^2 .

It is not a de Polignac number, because 222201120012021 - 2²⁹ = 222200583141109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222201120011985 and 222201120012003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222201120012029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2676790165 + ... + 2676873173.

It is an arithmetic number, because the mean of its divisors is an integer number (13374964376865).

Almost surely, 2^{222201120012021} is an apocalyptic number.

It is an amenable number.

222201120012021 is a deficient number, since it is larger than the sum of its proper divisors (98798025032739).

222201120012021 is a wasteful number, since it uses less digits than its factorization.

222201120012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118325 (or 118322 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222201120012021 its reverse (120210021102222), we get a palindrome (342411141114243).

The spelling of 222201120012021 in words is "two hundred twenty-two trillion, two hundred one billion, one hundred twenty million, twelve thousand, twenty-one".