21213600132054 has 64 divisors (see below), whose sum is σ = 46351538454528. Its totient is φ = 6419015584800.

The previous prime is 21213600132047. The next prime is 21213600132077. The reversal of 21213600132054 is 45023100631212.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 618401067 + ... + 618435369.

It is an arithmetic number, because the mean of its divisors is an integer number (724242788352).

Almost surely, 2^{21213600132054} is an apocalyptic number.

21213600132054 is an abundant number, since it is smaller than the sum of its proper divisors (25137938322474).

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

21213600132054 is a wasteful number, since it uses less digits than its factorization.

21213600132054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47673.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 21213600132054 its reverse (45023100631212), we get a palindrome (66236700763266).

The spelling of 21213600132054 in words is "twenty-one trillion, two hundred thirteen billion, six hundred million, one hundred thirty-two thousand, fifty-four".