10121021210 has 8 divisors (see below), whose sum is σ = 18217838196. Its totient is φ = 4048408480.

The previous prime is 10121021149. The next prime is 10121021263. The reversal of 10121021210 is 1212012101.

It can be written as a sum of positive squares in 2 ways, for example, as 8118190201 + 2002831009 = 90101^2 + 44753^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 10121021191 and 10121021200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506051051 + ... + 506051070.

Almost surely, 2^10121021210 is an apocalyptic number.

10121021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10121021210 is a deficient number, since it is larger than the sum of its proper divisors (8096816986).

10121021210 is a wasteful number, since it uses less digits than its factorization.

10121021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012102128.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10121021210 its reverse (1212012101), we get a palindrome (11333033311).

The spelling of 10121021210 in words is "ten billion, one hundred twenty-one million, twenty-one thousand, two hundred ten".