1281322277052 has 24 divisors (see below), whose sum is σ = 2989778647296. Its totient is φ = 427103616048.

The previous prime is 1281322277041. The next prime is 1281322277071. The reversal of 1281322277052 is 2507722231821.

It is a junction number, because it is equal to n+sod(n) for n = 1281322276995 and 1281322277013.

It is a congruent number.

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, 1146333 + ... + 1968939.

It is an arithmetic number, because the mean of its divisors is an integer number (124574110304).

Almost surely, 2^{1281322277052} is an apocalyptic number.

1281322277052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1281322277052 is an abundant number, since it is smaller than the sum of its proper divisors (1708456370244).

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

1281322277052 is a wasteful number, since it uses less digits than its factorization.

1281322277052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952417 (or 952415 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 1281322277052 in words is "one trillion, two hundred eighty-one billion, three hundred twenty-two million, two hundred seventy-seven thousand, fifty-two".