21214231310250 has 320 divisors, whose sum is σ = 64731642573312. Its totient is φ = 5141724048000.

The previous prime is 21214231310227. The next prime is 21214231310267. The reversal of 21214231310250 is 5201313241212.

It is a happy number.

21214231310250 is a `hidden beast` number, since 2 + 121 + 423 + 13 + 102 + 5 + 0 = 666.

It is a super-2 number, since 2×21214231310250² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1528726312 + ... + 1528740188.

Almost surely, 2^{21214231310250} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21214231310250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32365821286656).

21214231310250 is an abundant number, since it is smaller than the sum of its proper divisors (43517411263062).

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

21214231310250 is a wasteful number, since it uses less digits than its factorization.

21214231310250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20780 (or 20761 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 21214231310250 its reverse (5201313241212), we get a palindrome (26415544551462).

The spelling of 21214231310250 in words is "twenty-one trillion, two hundred fourteen billion, two hundred thirty-one million, three hundred ten thousand, two hundred fifty".