40120130221 has 4 divisors (see below), whose sum is σ = 40181011200. Its totient is φ = 40059249244.

The previous prime is 40120130189. The next prime is 40120130249. The reversal of 40120130221 is 12203102104.

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 40120130221 - 2⁵ = 40120130189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40120130195 and 40120130204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40120130251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30439501 + ... + 30440818.

It is an arithmetic number, because the mean of its divisors is an integer number (10045252800).

Almost surely, 2^40120130221 is an apocalyptic number.

It is an amenable number.

40120130221 is a deficient number, since it is larger than the sum of its proper divisors (60880979).

40120130221 is an equidigital number, since it uses as much as digits as its factorization.

40120130221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60880978.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 40120130221 its reverse (12203102104), we get a palindrome (52323232325).

The spelling of 40120130221 in words is "forty billion, one hundred twenty million, one hundred thirty thousand, two hundred twenty-one".