1213240052000 has 48 divisors (see below), whose sum is σ = 2980930817592. Its totient is φ = 485296019200.

The previous prime is 1213240051937. The next prime is 1213240052029. The reversal of 1213240052000 is 2500423121.

It can be written as a sum of positive squares in 4 ways, for example, as 175832616976 + 1037407435024 = 419324^2 + 1018532^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 151651007 + ... + 151659006.

Almost surely, 2^{1213240052000} is an apocalyptic number.

1213240052000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213240052000 is an abundant number, since it is smaller than the sum of its proper divisors (1767690765592).

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

1213240052000 is an equidigital number, since it uses as much as digits as its factorization.

1213240052000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303310038 (or 303310020 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 1213240052000 its reverse (2500423121), we get a palindrome (1215740475121).

The spelling of 1213240052000 in words is "one trillion, two hundred thirteen billion, two hundred forty million, fifty-two thousand".