2121332240001 has 64 divisors (see below), whose sum is σ = 3125815418880. Its totient is φ = 1271416608000.

The previous prime is 2121332239931. The next prime is 2121332240003. The reversal of 2121332240001 is 1000422331212.

It is not a de Polignac number, because 2121332240001 - 2¹⁵ = 2121332207233 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2121332240001.

It is not an unprimeable number, because it can be changed into a prime (2121332240003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1608287620 + ... + 1608288938.

It is an arithmetic number, because the mean of its divisors is an integer number (48840865920).

Almost surely, 2^{2121332240001} is an apocalyptic number.

It is an amenable number.

2121332240001 is a deficient number, since it is larger than the sum of its proper divisors (1004483178879).

2121332240001 is a wasteful number, since it uses less digits than its factorization.

2121332240001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406.

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

Adding to 2121332240001 its reverse (1000422331212), we get a palindrome (3121754571213).

The spelling of 2121332240001 in words is "two trillion, one hundred twenty-one billion, three hundred thirty-two million, two hundred forty thousand, one".