1225422243012 has 24 divisors (see below), whose sum is σ = 3119256618912. Its totient is φ = 371340073600.

The previous prime is 1225422242987. The next prime is 1225422243047. The reversal of 1225422243012 is 2103422245221.

It is a super-2 number, since 2×1225422243012² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4641750789 + ... + 4641751052.

It is an arithmetic number, because the mean of its divisors is an integer number (129969025788).

Almost surely, 2^{1225422243012} is an apocalyptic number.

1225422243012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1225422243012 is an abundant number, since it is smaller than the sum of its proper divisors (1893834375900).

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

1225422243012 is a wasteful number, since it uses less digits than its factorization.

1225422243012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9283501859 (or 9283501857 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 1225422243012 its reverse (2103422245221), we get a palindrome (3328844488233).

The spelling of 1225422243012 in words is "one trillion, two hundred twenty-five billion, four hundred twenty-two million, two hundred forty-three thousand, twelve".