21114102150 has 72 divisors (see below), whose sum is σ = 56802998304. Its totient is φ = 5622840000.

The previous prime is 21114102137. The next prime is 21114102157. The reversal of 21114102150 is 5120141112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114102157) 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 35 ways as a sum of consecutive naturals, for example, 306712 + ... + 369188.

It is an arithmetic number, because the mean of its divisors is an integer number (788930532).

Almost surely, 2^21114102150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21114102150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28401499152).

21114102150 is an abundant number, since it is smaller than the sum of its proper divisors (35688896154).

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

21114102150 is a wasteful number, since it uses less digits than its factorization.

21114102150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63246 (or 63238 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

Adding to 21114102150 its reverse (5120141112), we get a palindrome (26234243262).

The spelling of 21114102150 in words is "twenty-one billion, one hundred fourteen million, one hundred two thousand, one hundred fifty".