22501121111012 has 6 divisors (see below), whose sum is σ = 39376961944278. Its totient is φ = 11250560555504.

The previous prime is 22501121110999. The next prime is 22501121111023. The reversal of 22501121111012 is 21011112110522.

It can be written as a sum of positive squares in only one way, i.e., 21154351576996 + 1346769534016 = 4599386^2 + 1160504^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2812640138873 + ... + 2812640138880.

It is an arithmetic number, because the mean of its divisors is an integer number (6562826990713).

Almost surely, 2^{22501121111012} is an apocalyptic number.

It is an amenable number.

22501121111012 is a deficient number, since it is larger than the sum of its proper divisors (16875840833266).

22501121111012 is a wasteful number, since it uses less digits than its factorization.

22501121111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5625280277757 (or 5625280277755 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 20.

Adding to 22501121111012 its reverse (21011112110522), we get a palindrome (43512233221534).

The spelling of 22501121111012 in words is "twenty-two trillion, five hundred one billion, one hundred twenty-one million, one hundred eleven thousand, twelve".