22505505313012 has 24 divisors (see below), whose sum is σ = 40345585607880. Its totient is φ = 10978199907840.

The previous prime is 22505505312973. The next prime is 22505505313013. The reversal of 22505505313012 is 21031350550522.

It can be written as a sum of positive squares in 4 ways, for example, as 1025654460516 + 21479850852496 = 1012746^2 + 4634636^2 .

It is a super-2 number, since 2×22505505313012² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22505505313013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20640414 + ... + 21703402.

It is an arithmetic number, because the mean of its divisors is an integer number (1681066066995).

Almost surely, 2^{22505505313012} is an apocalyptic number.

It is an amenable number.

22505505313012 is a deficient number, since it is larger than the sum of its proper divisors (17840080294868).

22505505313012 is a wasteful number, since it uses less digits than its factorization.

22505505313012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192131 (or 1192129 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 34.

Adding to 22505505313012 its reverse (21031350550522), we get a palindrome (43536855863534).

The spelling of 22505505313012 in words is "twenty-two trillion, five hundred five billion, five hundred five million, three hundred thirteen thousand, twelve".