222201121011121 has 6 divisors (see below), whose sum is σ = 258478855053810. Its totient is φ = 190458103723776.

The previous prime is 222201121011101. The next prime is 222201121011127. The reversal of 222201121011121 is 121110121102222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 159670113412096 + 62531007599025 = 12636064^2 + 7907655^2 .

It is not a de Polignac number, because 222201121011121 - 2¹³ = 222201121002929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222201121011127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2267358377616 + ... + 2267358377713.

It is an arithmetic number, because the mean of its divisors is an integer number (43079809175635).

Almost surely, 2^{222201121011121} is an apocalyptic number.

It is an amenable number.

222201121011121 is a deficient number, since it is larger than the sum of its proper divisors (36277734042689).

222201121011121 is an equidigital number, since it uses as much as digits as its factorization.

222201121011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4534716755343 (or 4534716755336 counting only the distinct ones).

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

Adding to 222201121011121 its reverse (121110121102222), we get a palindrome (343311242113343).

The spelling of 222201121011121 in words is "two hundred twenty-two trillion, two hundred one billion, one hundred twenty-one million, eleven thousand, one hundred twenty-one".