102513511221 has 24 divisors (see below), whose sum is σ = 158147576160. Its totient is φ = 58859428320.

The previous prime is 102513511207. The next prime is 102513511223. The reversal of 102513511221 is 122115315201.

It is not a de Polignac number, because 102513511221 - 2¹¹ = 102513509173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102513511191 and 102513511200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102513511223) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 7424850 + ... + 7438643.

It is an arithmetic number, because the mean of its divisors is an integer number (6589482340).

Almost surely, 2^102513511221 is an apocalyptic number.

102513511221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102513511221 is a deficient number, since it is larger than the sum of its proper divisors (55634064939).

102513511221 is a wasteful number, since it uses less digits than its factorization.

102513511221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14863537 (or 14863526 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 24.

Adding to 102513511221 its reverse (122115315201), we get a palindrome (224628826422).

The spelling of 102513511221 in words is "one hundred two billion, five hundred thirteen million, five hundred eleven thousand, two hundred twenty-one".