2122030221 has 4 divisors (see below), whose sum is σ = 2829373632. Its totient is φ = 1414686812.

The previous prime is 2122030217. The next prime is 2122030223. The reversal of 2122030221 is 1220302212.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 2122030221 - 2² = 2122030217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2122030221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122030223) 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, 353671701 + ... + 353671706.

It is an arithmetic number, because the mean of its divisors is an integer number (707343408).

Almost surely, 2^2122030221 is an apocalyptic number.

It is an amenable number.

2122030221 is a deficient number, since it is larger than the sum of its proper divisors (707343411).

2122030221 is an equidigital number, since it uses as much as digits as its factorization.

2122030221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707343410.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2122030221 is about 46065.4992483529. The cubic root of 2122030221 is about 1285.0416033203.

Adding to 2122030221 its reverse (1220302212), we get a palindrome (3342332433).

It can be divided in two parts, 2 and 122030221, that multiplied together give a palindrome (244060442).

The spelling of 2122030221 in words is "two billion, one hundred twenty-two million, thirty thousand, two hundred twenty-one".