21342212150 has 144 divisors (see below), whose sum is σ = 48155556240. Its totient is φ = 7008019200.

The previous prime is 21342212123. The next prime is 21342212153. The reversal of 21342212150 is 5121224312.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342212153) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9306404 + ... + 9308696.

It is an arithmetic number, because the mean of its divisors is an integer number (334413585).

Almost surely, 2^21342212150 is an apocalyptic number.

21342212150 is an abundant number, since it is smaller than the sum of its proper divisors (26813344090).

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

21342212150 is a wasteful number, since it uses less digits than its factorization.

21342212150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479 (or 2467 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 21342212150 its reverse (5121224312), we get a palindrome (26463436462).

The spelling of 21342212150 in words is "twenty-one billion, three hundred forty-two million, two hundred twelve thousand, one hundred fifty".