40342231121212 has 48 divisors (see below), whose sum is σ = 71657755827840. Its totient is φ = 19870083995328.

The previous prime is 40342231121197. The next prime is 40342231121221. The reversal of 40342231121212 is 21212113224304.

It is a super-2 number, since 2×40342231121212² (a number of 28 digits) contains 22 as substring.

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, 164924614 + ... + 165169042.

It is an arithmetic number, because the mean of its divisors is an integer number (1492869913080).

Almost surely, 2^{40342231121212} is an apocalyptic number.

It is an amenable number.

40342231121212 is a deficient number, since it is larger than the sum of its proper divisors (31315524706628).

40342231121212 is a wasteful number, since it uses less digits than its factorization.

40342231121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245962 (or 245960 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 40342231121212 its reverse (21212113224304), we get a palindrome (61554344345516).

The spelling of 40342231121212 in words is "forty trillion, three hundred forty-two billion, two hundred thirty-one million, one hundred twenty-one thousand, two hundred twelve".