4261221 has 8 divisors (see below), whose sum is σ = 6312960. Its totient is φ = 2840796.

The previous prime is 4261219. The next prime is 4261223. The reversal of 4261221 is 1221624.

It is an interprime number because it is at equal distance from previous prime (4261219) and next prime (4261223).

It is not a de Polignac number, because 4261221 - 2¹ = 4261219 is a prime.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 4261194 and 4261203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4261223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78885 + ... + 78938.

It is an arithmetic number, because the mean of its divisors is an integer number (789120).

Almost surely, 2^4261221 is an apocalyptic number.

It is an amenable number.

4261221 is a deficient number, since it is larger than the sum of its proper divisors (2051739).

4261221 is a wasteful number, since it uses less digits than its factorization.

4261221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157832 (or 157826 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 4261221 is about 2064.2725110799. The cubic root of 4261221 is about 162.1230204111.

Adding to 4261221 its reverse (1221624), we get a palindrome (5482845).

The spelling of 4261221 in words is "four million, two hundred sixty-one thousand, two hundred twenty-one".