1351220220452 has 96 divisors (see below), whose sum is σ = 2538927820800. Its totient is φ = 627381925632.

The previous prime is 1351220220421. The next prime is 1351220220479. The reversal of 1351220220452 is 2540220221531.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 510470993 + ... + 510473639.

It is an arithmetic number, because the mean of its divisors is an integer number (26447164800).

Almost surely, 2^{1351220220452} is an apocalyptic number.

It is an amenable number.

1351220220452 is a deficient number, since it is larger than the sum of its proper divisors (1187707600348).

1351220220452 is a wasteful number, since it uses less digits than its factorization.

1351220220452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3385 (or 3383 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 1351220220452 its reverse (2540220221531), we get a palindrome (3891440441983).

The spelling of 1351220220452 in words is "one trillion, three hundred fifty-one billion, two hundred twenty million, two hundred twenty thousand, four hundred fifty-two".