40221126172 has 48 divisors (see below), whose sum is σ = 72264019968. Its totient is φ = 19581883200.

The previous prime is 40221126167. The next prime is 40221126193. The reversal of 40221126172 is 27162112204.

It is a self number, because there is not a number n which added to its sum of digits gives 40221126172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29422233 + ... + 29423599.

It is an arithmetic number, because the mean of its divisors is an integer number (1505500416).

Almost surely, 2^40221126172 is an apocalyptic number.

It is an amenable number.

40221126172 is a deficient number, since it is larger than the sum of its proper divisors (32042893796).

40221126172 is a wasteful number, since it uses less digits than its factorization.

40221126172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626 (or 2624 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

Adding to 40221126172 its reverse (27162112204), we get a palindrome (67383238376).

The spelling of 40221126172 in words is "forty billion, two hundred twenty-one million, one hundred twenty-six thousand, one hundred seventy-two".