40321223121 has 32 divisors (see below), whose sum is σ = 54955376640. Its totient is φ = 26290656000.

The previous prime is 40321223083. The next prime is 40321223153. The reversal of 40321223121 is 12132212304.

It is not a de Polignac number, because 40321223121 - 2²¹ = 40319125969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40321223191) 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, 35030896 + ... + 35032046.

It is an arithmetic number, because the mean of its divisors is an integer number (1717355520).

Almost surely, 2^40321223121 is an apocalyptic number.

It is an amenable number.

40321223121 is a deficient number, since it is larger than the sum of its proper divisors (14634153519).

40321223121 is a wasteful number, since it uses less digits than its factorization.

40321223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 40321223121 its reverse (12132212304), we get a palindrome (52453435425).

The spelling of 40321223121 in words is "forty billion, three hundred twenty-one million, two hundred twenty-three thousand, one hundred twenty-one".