20330431243122 has 128 divisors (see below), whose sum is σ = 54616401100800. Its totient is φ = 4872393757440.

The previous prime is 20330431243103. The next prime is 20330431243127. The reversal of 20330431243122 is 22134213403302.

It is a happy number.

It is a super-2 number, since 2×20330431243122² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20330431243122.

It is not an unprimeable number, because it can be changed into a prime (20330431243127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13702888 + ... + 15113900.

It is an arithmetic number, because the mean of its divisors is an integer number (426690633600).

Almost surely, 2^{20330431243122} is an apocalyptic number.

20330431243122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20330431243122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27308200550400).

20330431243122 is an abundant number, since it is smaller than the sum of its proper divisors (34285969857678).

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

20330431243122 is a wasteful number, since it uses less digits than its factorization.

20330431243122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413448.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 20330431243122 its reverse (22134213403302), we get a palindrome (42464644646424).

The spelling of 20330431243122 in words is "twenty trillion, three hundred thirty billion, four hundred thirty-one million, two hundred forty-three thousand, one hundred twenty-two".