4142111221 has 4 divisors (see below), whose sum is σ = 4275727744. Its totient is φ = 4008494700.

The previous prime is 4142111219. The next prime is 4142111257. The reversal of 4142111221 is 1221112414.

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 4142111221 - 2¹ = 4142111219 is a prime.

It is a super-2 number, since 2×4142111221² = 34314170734268221682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4142111201) 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, 66808215 + ... + 66808276.

It is an arithmetic number, because the mean of its divisors is an integer number (1068931936).

Almost surely, 2^4142111221 is an apocalyptic number.

It is an amenable number.

4142111221 is a deficient number, since it is larger than the sum of its proper divisors (133616523).

4142111221 is a wasteful number, since it uses less digits than its factorization.

4142111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133616522.

The product of its digits is 128, while the sum is 19.

The square root of 4142111221 is about 64359.2357086378. The cubic root of 4142111221 is about 1605.9816745969.

Adding to 4142111221 its reverse (1221112414), we get a palindrome (5363223635).

The spelling of 4142111221 in words is "four billion, one hundred forty-two million, one hundred eleven thousand, two hundred twenty-one".