2132121221055 has 96 divisors (see below), whose sum is σ = 4363483557888. Its totient is φ = 942462259200.

The previous prime is 2132121221039. The next prime is 2132121221099. The reversal of 2132121221055 is 5501221212312.

2132121221055 is a `hidden beast` number, since 21 + 321 + 212 + 2 + 105 + 5 = 666.

It is not a de Polignac number, because 2132121221055 - 2⁴ = 2132121221039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11794300 + ... + 11973710.

It is an arithmetic number, because the mean of its divisors is an integer number (45452953728).

Almost surely, 2^{2132121221055} is an apocalyptic number.

2132121221055 is an abundant number, since it is smaller than the sum of its proper divisors (2231362336833).

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

2132121221055 is a wasteful number, since it uses less digits than its factorization.

2132121221055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180677 (or 180674 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 2132121221055 its reverse (5501221212312), we get a palindrome (7633342433367).

The spelling of 2132121221055 in words is "two trillion, one hundred thirty-two billion, one hundred twenty-one million, two hundred twenty-one thousand, fifty-five".