21014103252 has 48 divisors (see below), whose sum is σ = 49327992000. Its totient is φ = 6962608128.

The previous prime is 21014103251. The next prime is 21014103283. The reversal of 21014103252 is 25230141012.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014103251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3468658 + ... + 3474710.

It is an arithmetic number, because the mean of its divisors is an integer number (1027666500).

Almost surely, 2^21014103252 is an apocalyptic number.

It is an amenable number.

21014103252 is an abundant number, since it is smaller than the sum of its proper divisors (28313888748).

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

21014103252 is a wasteful number, since it uses less digits than its factorization.

21014103252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7752 (or 7750 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 21014103252 its reverse (25230141012), we get a palindrome (46244244264).

The spelling of 21014103252 in words is "twenty-one billion, fourteen million, one hundred three thousand, two hundred fifty-two".