1213540130250 has 128 divisors (see below), whose sum is σ = 3846344486400. Its totient is φ = 277380590400.

The previous prime is 1213540130239. The next prime is 1213540130347. The reversal of 1213540130250 is 520310453121.

1213540130250 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 5 + 401 + 3 + 0 + 250 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12794445 + ... + 12888944.

It is an arithmetic number, because the mean of its divisors is an integer number (30049566300).

Almost surely, 2^{1213540130250} is an apocalyptic number.

1213540130250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213540130250 is an abundant number, since it is smaller than the sum of its proper divisors (2632804356150).

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

1213540130250 is a wasteful number, since it uses less digits than its factorization.

1213540130250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25683422 (or 25683406 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 1213540130250 its reverse (520310453121), we get a palindrome (1733850583371).

The spelling of 1213540130250 in words is "one trillion, two hundred thirteen billion, five hundred forty million, one hundred thirty thousand, two hundred fifty".