21232032002121 has 8 divisors (see below), whose sum is σ = 28316262269824. Its totient is φ = 14151244867920.

The previous prime is 21232032002113. The next prime is 21232032002221. The reversal of 21232032002121 is 12120023023212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21232032002121 - 2³ = 21232032002113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21232032002101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860768986 + ... + 860793651.

It is an arithmetic number, because the mean of its divisors is an integer number (3539532783728).

Almost surely, 2^{21232032002121} is an apocalyptic number.

It is an amenable number.

21232032002121 is a deficient number, since it is larger than the sum of its proper divisors (7084230267703).

21232032002121 is a wasteful number, since it uses less digits than its factorization.

21232032002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721566751.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21232032002121 its reverse (12120023023212), we get a palindrome (33352055025333).

The spelling of 21232032002121 in words is "twenty-one trillion, two hundred thirty-two billion, thirty-two million, two thousand, one hundred twenty-one".