4214051221 has 4 divisors (see below), whose sum is σ = 4214210112. Its totient is φ = 4213892332.

The previous prime is 4214051209. The next prime is 4214051279. The reversal of 4214051221 is 1221504124.

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 4214051221 - 2⁵ = 4214051189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4214051192 and 4214051201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4214051201) 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, 28975 + ... + 96268.

It is an arithmetic number, because the mean of its divisors is an integer number (1053552528).

Almost surely, 2^4214051221 is an apocalyptic number.

It is an amenable number.

4214051221 is a deficient number, since it is larger than the sum of its proper divisors (158891).

4214051221 is a wasteful number, since it uses less digits than its factorization.

4214051221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158890.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 4214051221 is about 64915.7239888765. The cubic root of 4214051221 is about 1615.2259005956.

Adding to 4214051221 its reverse (1221504124), we get a palindrome (5435555345).

The spelling of 4214051221 in words is "four billion, two hundred fourteen million, fifty-one thousand, two hundred twenty-one".