40231221102 has 40 divisors (see below), whose sum is σ = 90160758072. Its totient is φ = 13408470000.

The previous prime is 40231221101. The next prime is 40231221109. The reversal of 40231221102 is 20112213204.

It is a happy number.

40231221102 is a `hidden beast` number, since 402 + 31 + 221 + 10 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40231221101) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1504852 + ... + 1531352.

Almost surely, 2^40231221102 is an apocalyptic number.

40231221102 is an abundant number, since it is smaller than the sum of its proper divisors (49929536970).

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

40231221102 is a wasteful number, since it uses less digits than its factorization.

40231221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35886 (or 35877 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 40231221102 its reverse (20112213204), we get a palindrome (60343434306).

The spelling of 40231221102 in words is "forty billion, two hundred thirty-one million, two hundred twenty-one thousand, one hundred two".