21003202242510 has 64 divisors (see below), whose sum is σ = 52303422574080. Its totient is φ = 5391383437440.

The previous prime is 21003202242499. The next prime is 21003202242557. The reversal of 21003202242510 is 1524220230012.

It is a super-2 number, since 2×21003202242510² (a number of 27 digits) contains 22 as substring.

It is a congruent 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, 36179722 + ... + 36755661.

It is an arithmetic number, because the mean of its divisors is an integer number (817240977720).

Almost surely, 2^{21003202242510} is an apocalyptic number.

21003202242510 is an abundant number, since it is smaller than the sum of its proper divisors (31300220331570).

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

21003202242510 is a wasteful number, since it uses less digits than its factorization.

21003202242510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72935753.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 21003202242510 its reverse (1524220230012), we get a palindrome (22527422472522).

The spelling of 21003202242510 in words is "twenty-one trillion, three billion, two hundred two million, two hundred forty-two thousand, five hundred ten".