2121332121101 has 8 divisors (see below), whose sum is σ = 2124543082464. Its totient is φ = 2118123559120.

The previous prime is 2121332121091. The next prime is 2121332121109. The reversal of 2121332121101 is 1011212331212.

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 2121332121101 - 2²² = 2121327926797 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 (2121332121109) 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, 1173686 + ... + 2370696.

It is an arithmetic number, because the mean of its divisors is an integer number (265567885308).

Almost surely, 2^{2121332121101} is an apocalyptic number.

It is an amenable number.

2121332121101 is a deficient number, since it is larger than the sum of its proper divisors (3210961363).

2121332121101 is a wasteful number, since it uses less digits than its factorization.

2121332121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199691.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 2121332121101 its reverse (1011212331212), we get a palindrome (3132544452313).

The spelling of 2121332121101 in words is "two trillion, one hundred twenty-one billion, three hundred thirty-two million, one hundred twenty-one thousand, one hundred one".