2232220121 has 4 divisors (see below), whose sum is σ = 2236185552. Its totient is φ = 2228254692.

The previous prime is 2232220099. The next prime is 2232220169. The reversal of 2232220121 is 1210222322.

2232220121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1210222322 = 2 ⋅605111161.

It is a cyclic number.

It is not a de Polignac number, because 2232220121 - 2²² = 2228025817 is a prime.

It is a super-3 number, since 3×2232220121³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2232220121.

It is not an unprimeable number, because it can be changed into a prime (2232222121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1981871 + ... + 1982996.

It is an arithmetic number, because the mean of its divisors is an integer number (559046388).

Almost surely, 2^2232220121 is an apocalyptic number.

It is an amenable number.

2232220121 is a deficient number, since it is larger than the sum of its proper divisors (3965431).

2232220121 is an equidigital number, since it uses as much as digits as its factorization.

2232220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965430.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2232220121 is about 47246.3768028830. The cubic root of 2232220121 is about 1306.9099753067.

Adding to 2232220121 its reverse (1210222322), we get a palindrome (3442442443).

The spelling of 2232220121 in words is "two billion, two hundred thirty-two million, two hundred twenty thousand, one hundred twenty-one".