7401132221 has 32 divisors (see below), whose sum is σ = 8742297600. Its totient is φ = 6135212160.

The previous prime is 7401132217. The next prime is 7401132227. The reversal of 7401132221 is 1222311047.

7401132221 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 7401132221 - 2² = 7401132217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7401132227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9960776 + ... + 9961518.

It is an arithmetic number, because the mean of its divisors is an integer number (273196800).

Almost surely, 2^7401132221 is an apocalyptic number.

It is an amenable number.

7401132221 is a deficient number, since it is larger than the sum of its proper divisors (1341165379).

7401132221 is a wasteful number, since it uses less digits than its factorization.

7401132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 7401132221 is about 86029.8333196107. The cubic root of 7401132221 is about 1948.7945406029.

Adding to 7401132221 its reverse (1222311047), we get a palindrome (8623443268).

The spelling of 7401132221 in words is "seven billion, four hundred one million, one hundred thirty-two thousand, two hundred twenty-one".