21213611546050 has 96 divisors (see below), whose sum is σ = 50240210135040. Its totient is φ = 6471353121600.

The previous prime is 21213611546041. The next prime is 21213611546051. The reversal of 21213611546050 is 5064511631212.

It is not an unprimeable number, because it can be changed into a prime (21213611546051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58436380 + ... + 58798279.

It is an arithmetic number, because the mean of its divisors is an integer number (523335522240).

Almost surely, 2^{21213611546050} is an apocalyptic number.

21213611546050 is an abundant number, since it is smaller than the sum of its proper divisors (29026598588990).

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

21213611546050 is a wasteful number, since it uses less digits than its factorization.

21213611546050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117234736 (or 117234731 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 21213611546050 in words is "twenty-one trillion, two hundred thirteen billion, six hundred eleven million, five hundred forty-six thousand, fifty".