2102010210121 has 8 divisors (see below), whose sum is σ = 2104192701000. Its totient is φ = 2099828238720.

The previous prime is 2102010210103. The next prime is 2102010210193. The reversal of 2102010210121 is 1210120102012.

It can be written as a sum of positive squares in 4 ways, for example, as 380613729721 + 1721396480400 = 616939^2 + 1312020^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102010210121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102010910121) 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, 8246301 + ... + 8497381.

It is an arithmetic number, because the mean of its divisors is an integer number (263024087625).

Almost surely, 2^{2102010210121} is an apocalyptic number.

It is an amenable number.

2102010210121 is a deficient number, since it is larger than the sum of its proper divisors (2182490879).

2102010210121 is a wasteful number, since it uses less digits than its factorization.

2102010210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259739.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2102010210121 its reverse (1210120102012), we get a palindrome (3312130312133).

The spelling of 2102010210121 in words is "two trillion, one hundred two billion, ten million, two hundred ten thousand, one hundred twenty-one".