40221201405 has 48 divisors (see below), whose sum is σ = 81666218304. Its totient is φ = 16715301120.

The previous prime is 40221201359. The next prime is 40221201437. The reversal of 40221201405 is 50410212204.

It is not a de Polignac number, because 40221201405 - 2⁶ = 40221201341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2479312 + ... + 2495481.

It is an arithmetic number, because the mean of its divisors is an integer number (1701379548).

Almost surely, 2^40221201405 is an apocalyptic number.

It is an amenable number.

40221201405 is an abundant number, since it is smaller than the sum of its proper divisors (41445016899).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40221201405 is a wasteful number, since it uses less digits than its factorization.

40221201405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4974826 (or 4974819 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 40221201405 its reverse (50410212204), we get a palindrome (90631413609).

The spelling of 40221201405 in words is "forty billion, two hundred twenty-one million, two hundred one thousand, four hundred five".