2121203405010 has 16 divisors (see below), whose sum is σ = 5090888172096. Its totient is φ = 565654241328.

The previous prime is 2121203405003. The next prime is 2121203405017. The reversal of 2121203405010 is 105043021212.

It is an interprime number because it is at equal distance from previous prime (2121203405003) and next prime (2121203405017).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2121203405017) 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, 35353390054 + ... + 35353390113.

It is an arithmetic number, because the mean of its divisors is an integer number (318180510756).

Almost surely, 2^{2121203405010} is an apocalyptic number.

2121203405010 is an abundant number, since it is smaller than the sum of its proper divisors (2969684767086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121203405010 is a wasteful number, since it uses less digits than its factorization.

2121203405010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70706780177.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 2121203405010 its reverse (105043021212), we get a palindrome (2226246426222).

The spelling of 2121203405010 in words is "two trillion, one hundred twenty-one billion, two hundred three million, four hundred five thousand, ten".