2121031010 has 32 divisors (see below), whose sum is σ = 4619928960. Its totient is φ = 684433152.

The previous prime is 2121030979. The next prime is 2121031049. The reversal of 2121031010 is 101301212.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2121030982 and 2121031000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 890000 + ... + 892379.

It is an arithmetic number, because the mean of its divisors is an integer number (144372780).

Almost surely, 2^2121031010 is an apocalyptic number.

2121031010 is an abundant number, since it is smaller than the sum of its proper divisors (2498897950).

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

2121031010 is a wasteful number, since it uses less digits than its factorization.

2121031010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782410.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2121031010 is about 46054.6524251351. The cubic root of 2121031010 is about 1284.8398736615.

Adding to 2121031010 its reverse (101301212), we get a palindrome (2222332222).

The spelling of 2121031010 in words is "two billion, one hundred twenty-one million, thirty-one thousand, ten".