21263210503012 has 12 divisors (see below), whose sum is σ = 37230421809280. Its totient is φ = 10625947128936.

The previous prime is 21263210502977. The next prime is 21263210503013. The reversal of 21263210503012 is 21030501236212.

It is a super-2 number, since 2×21263210503012² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21263210503013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1414522188 + ... + 1414537219.

Almost surely, 2^{21263210503012} is an apocalyptic number.

It is an amenable number.

21263210503012 is a deficient number, since it is larger than the sum of its proper divisors (15967211306268).

21263210503012 is a wasteful number, since it uses less digits than its factorization.

21263210503012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829061290 (or 2829061288 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 21263210503012 its reverse (21030501236212), we get a palindrome (42293711739224).

The spelling of 21263210503012 in words is "twenty-one trillion, two hundred sixty-three billion, two hundred ten million, five hundred three thousand, twelve".