12521224213000 has 64 divisors (see below), whose sum is σ = 29301657044400. Its totient is φ = 5008149107200.

The previous prime is 12521224212979. The next prime is 12521224213019. The reversal of 12521224213000 is 31242212521.

It can be written as a sum of positive squares in 8 ways, for example, as 291809557636 + 12229414655364 = 540194^2 + 3497058^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

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 15 ways as a sum of consecutive naturals, for example, 14550762 + ... + 15387238.

Almost surely, 2^{12521224213000} is an apocalyptic number.

12521224213000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12521224213000 is an abundant number, since it is smaller than the sum of its proper divisors (16780432831400).

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

12521224213000 is a wasteful number, since it uses less digits than its factorization.

12521224213000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851467 (or 851453 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 12521224213000 its reverse (31242212521), we get a palindrome (12552466425521).

The spelling of 12521224213000 in words is "twelve trillion, five hundred twenty-one billion, two hundred twenty-four million, two hundred thirteen thousand".