2121331101 has 32 divisors (see below), whose sum is σ = 3043001088. Its totient is φ = 1311045120.

The previous prime is 2121331099. The next prime is 2121331123. The reversal of 2121331101 is 1011331212.

It is a happy number.

It is not a de Polignac number, because 2121331101 - 2¹ = 2121331099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121331141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 715915 + ... + 718871.

It is an arithmetic number, because the mean of its divisors is an integer number (95093784).

Almost surely, 2^2121331101 is an apocalyptic number.

It is an amenable number.

2121331101 is a deficient number, since it is larger than the sum of its proper divisors (921669987).

2121331101 is a wasteful number, since it uses less digits than its factorization.

2121331101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2121331101 is about 46057.9102977979. The cubic root of 2121331101 is about 1284.9004653735.

Adding to 2121331101 its reverse (1011331212), we get a palindrome (3132662313).

The spelling of 2121331101 in words is "two billion, one hundred twenty-one million, three hundred thirty-one thousand, one hundred one".