2101343121 has 16 divisors (see below), whose sum is σ = 3150611520. Its totient is φ = 1384015680.

The previous prime is 2101343117. The next prime is 2101343137. The reversal of 2101343121 is 1213431012.

2101343121 is a `hidden beast` number, since 210 + 1 + 3 + 431 + 21 = 666.

It is not a de Polignac number, because 2101343121 - 2² = 2101343117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101343094 and 2101343103.

It is not an unprimeable number, because it can be changed into a prime (2101342121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466600 + ... + 471081.

It is an arithmetic number, because the mean of its divisors is an integer number (196913220).

Almost surely, 2^2101343121 is an apocalyptic number.

It is an amenable number.

2101343121 is a deficient number, since it is larger than the sum of its proper divisors (1049268399).

2101343121 is an equidigital number, since it uses as much as digits as its factorization.

2101343121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937773 (or 937767 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2101343121 is about 45840.4092586443. The cubic root of 2101343121 is about 1280.8521183544.

Adding to 2101343121 its reverse (1213431012), we get a palindrome (3314774133).

The spelling of 2101343121 in words is "two billion, one hundred one million, three hundred forty-three thousand, one hundred twenty-one".