2121231010 has 16 divisors (see below), whose sum is σ = 3835040256. Its totient is φ = 844753648.

The previous prime is 2121231001. The next prime is 2121231011. The reversal of 2121231010 is 101321212.

It is not an unprimeable number, because it can be changed into a prime (2121231011) 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 7 ways as a sum of consecutive naturals, for example, 464962 + ... + 469501.

It is an arithmetic number, because the mean of its divisors is an integer number (239690016).

Almost surely, 2^2121231010 is an apocalyptic number.

2121231010 is a deficient number, since it is larger than the sum of its proper divisors (1713809246).

2121231010 is a wasteful number, since it uses less digits than its factorization.

2121231010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934697.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2121231010 is about 46056.8237072423. The cubic root of 2121231010 is about 1284.8802565220.

Adding to 2121231010 its reverse (101321212), we get a palindrome (2222552222).

The spelling of 2121231010 in words is "two billion, one hundred twenty-one million, two hundred thirty-one thousand, ten".