20123131100222 has 4 divisors (see below), whose sum is σ = 30184696650336. Its totient is φ = 10061565550110.

The previous prime is 20123131100197. The next prime is 20123131100231. The reversal of 20123131100222 is 22200113132102.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 20123131100194 and 20123131100203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5030782775054 + ... + 5030782775057.

It is an arithmetic number, because the mean of its divisors is an integer number (7546174162584).

Almost surely, 2^{20123131100222} is an apocalyptic number.

20123131100222 is a deficient number, since it is larger than the sum of its proper divisors (10061565550114).

20123131100222 is a wasteful number, since it uses less digits than its factorization.

20123131100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10061565550113.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20123131100222 its reverse (22200113132102), we get a palindrome (42323244232324).

The spelling of 20123131100222 in words is "twenty trillion, one hundred twenty-three billion, one hundred thirty-one million, one hundred thousand, two hundred twenty-two".