40121912212918 has 32 divisors (see below), whose sum is σ = 60640858275840. Its totient is φ = 19908615767040.

The previous prime is 40121912212913. The next prime is 40121912212957. The reversal of 40121912212918 is 81921221912104.

It is a happy number.

It is a super-3 number, since 3×40121912212918³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40121912212913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2451083038 + ... + 2451099406.

It is an arithmetic number, because the mean of its divisors is an integer number (1895026821120).

Almost surely, 2^{40121912212918} is an apocalyptic number.

40121912212918 is a deficient number, since it is larger than the sum of its proper divisors (20518946062922).

40121912212918 is a wasteful number, since it uses less digits than its factorization.

40121912212918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25672.

The product of its (nonzero) digits is 41472, while the sum is 43.

The spelling of 40121912212918 in words is "forty trillion, one hundred twenty-one billion, nine hundred twelve million, two hundred twelve thousand, nine hundred eighteen".