40621132121 has 4 divisors (see below), whose sum is σ = 40848066000. Its totient is φ = 40394198244.

The previous prime is 40621132081. The next prime is 40621132147. The reversal of 40621132121 is 12123112604.

40621132121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-40621132121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40621132151) 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, 113466671 + ... + 113467028.

It is an arithmetic number, because the mean of its divisors is an integer number (10212016500).

Almost surely, 2^40621132121 is an apocalyptic number.

It is an amenable number.

40621132121 is a deficient number, since it is larger than the sum of its proper divisors (226933879).

40621132121 is a wasteful number, since it uses less digits than its factorization.

40621132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226933878.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 40621132121 its reverse (12123112604), we get a palindrome (52744244725).

The spelling of 40621132121 in words is "forty billion, six hundred twenty-one million, one hundred thirty-two thousand, one hundred twenty-one".