4151011221 has 48 divisors (see below), whose sum is σ = 6940177920. Its totient is φ = 2341785600.

The previous prime is 4151011217. The next prime is 4151011297. The reversal of 4151011221 is 1221101514.

4151011221 is a `hidden beast` number, since 41 + 510 + 112 + 2 + 1 = 666.

4151011221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4151011221 - 2² = 4151011217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4151011194 and 4151011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4151011121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2945365 + ... + 2946773.

It is an arithmetic number, because the mean of its divisors is an integer number (144587040).

Almost surely, 2^4151011221 is an apocalyptic number.

It is an amenable number.

4151011221 is a deficient number, since it is larger than the sum of its proper divisors (2789166699).

4151011221 is a wasteful number, since it uses less digits than its factorization.

4151011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986 (or 1983 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 4151011221 is about 64428.3417526790. The cubic root of 4151011221 is about 1607.1310894106.

Adding to 4151011221 its reverse (1221101514), we get a palindrome (5372112735).

The spelling of 4151011221 in words is "four billion, one hundred fifty-one million, eleven thousand, two hundred twenty-one".