4220342121 has 4 divisors (see below), whose sum is σ = 5627122832. Its totient is φ = 2813561412.

The previous prime is 4220342101. The next prime is 4220342143. The reversal of 4220342121 is 1212430224.

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 not a de Polignac number, because 4220342121 - 2¹¹ = 4220340073 is a prime.

It is a super-2 number, since 2×4220342121² = 35622575236573557282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4220342101) 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, 703390351 + ... + 703390356.

It is an arithmetic number, because the mean of its divisors is an integer number (1406780708).

Almost surely, 2^4220342121 is an apocalyptic number.

It is an amenable number.

4220342121 is a deficient number, since it is larger than the sum of its proper divisors (1406780711).

4220342121 is a wasteful number, since it uses less digits than its factorization.

4220342121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406780710.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4220342121 is about 64964.1602808810. The cubic root of 4220342121 is about 1616.0292583716.

Adding to 4220342121 its reverse (1212430224), we get a palindrome (5432772345).

The spelling of 4220342121 in words is "four billion, two hundred twenty million, three hundred forty-two thousand, one hundred twenty-one".