2101121210 has 32 divisors (see below), whose sum is σ = 3869645184. Its totient is φ = 821160000.

The previous prime is 2101121207. The next prime is 2101121237. The reversal of 2101121210 is 121211012.

It is a super-2 number, since 2×2101121210² = 8829420678223728200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2101121191 and 2101121200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80705 + ... + 103515.

It is an arithmetic number, because the mean of its divisors is an integer number (120926412).

Almost surely, 2^2101121210 is an apocalyptic number.

2101121210 is a deficient number, since it is larger than the sum of its proper divisors (1768523974).

2101121210 is a wasteful number, since it uses less digits than its factorization.

2101121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23030.

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

The square root of 2101121210 is about 45837.9887211470. The cubic root of 2101121210 is about 1280.8070289101.

Adding to 2101121210 its reverse (121211012), we get a palindrome (2222332222).

The spelling of 2101121210 in words is "two billion, one hundred one million, one hundred twenty-one thousand, two hundred ten".