20331440012442 has 32 divisors (see below), whose sum is σ = 43792955845632. Its totient is φ = 6255518842944.

The previous prime is 20331440012407. The next prime is 20331440012453. The reversal of 20331440012442 is 24421004413302.

It is a super-2 number, since 2×20331440012442² (a number of 27 digits) contains 22 as substring.

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, 4841913 + ... + 8006684.

It is an arithmetic number, because the mean of its divisors is an integer number (1368529870176).

Almost surely, 2^{20331440012442} is an apocalyptic number.

20331440012442 is an abundant number, since it is smaller than the sum of its proper divisors (23461515833190).

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

20331440012442 is a wasteful number, since it uses less digits than its factorization.

20331440012442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12868902.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 20331440012442 its reverse (24421004413302), we get a palindrome (44752444425744).

The spelling of 20331440012442 in words is "twenty trillion, three hundred thirty-one billion, four hundred forty million, twelve thousand, four hundred forty-two".