20022502123412 has 6 divisors (see below), whose sum is σ = 35039378715978. Its totient is φ = 10011251061704.

The previous prime is 20022502123411. The next prime is 20022502123417. The reversal of 20022502123412 is 21432120522002.

It can be written as a sum of positive squares in only one way, i.e., 17076349581316 + 2946152542096 = 4132354^2 + 1716436^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022502123411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2502812765423 + ... + 2502812765430.

It is an arithmetic number, because the mean of its divisors is an integer number (5839896452663).

Almost surely, 2^{20022502123412} is an apocalyptic number.

It is an amenable number.

20022502123412 is a deficient number, since it is larger than the sum of its proper divisors (15016876592566).

20022502123412 is a wasteful number, since it uses less digits than its factorization.

20022502123412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005625530857 (or 5005625530855 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 20022502123412 its reverse (21432120522002), we get a palindrome (41454622645414).

The spelling of 20022502123412 in words is "twenty trillion, twenty-two billion, five hundred two million, one hundred twenty-three thousand, four hundred twelve".