2121332220101 has 8 divisors (see below), whose sum is σ = 2133768791424. Its totient is φ = 2108931960960.

The previous prime is 2121332220067. The next prime is 2121332220149. The reversal of 2121332220101 is 1010222331212.

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

It is a cyclic number.

It is not a de Polignac number, because 2121332220101 - 2¹⁴ = 2121332203717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121332420101) 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, 8960861 + ... + 9194546.

It is an arithmetic number, because the mean of its divisors is an integer number (266721098928).

Almost surely, 2^{2121332220101} is an apocalyptic number.

It is an amenable number.

2121332220101 is a deficient number, since it is larger than the sum of its proper divisors (12436571323).

2121332220101 is a wasteful number, since it uses less digits than its factorization.

2121332220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18156091.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2121332220101 its reverse (1010222331212), we get a palindrome (3131554551313).

The spelling of 2121332220101 in words is "two trillion, one hundred twenty-one billion, three hundred thirty-two million, two hundred twenty thousand, one hundred one".