9901210210 has 16 divisors (see below), whose sum is σ = 18870542136. Its totient is φ = 3727514368.

The previous prime is 9901210147. The next prime is 9901210243. The reversal of 9901210210 is 120121099.

It can be written as a sum of positive squares in 4 ways, for example, as 9808723521 + 92486689 = 99039^2 + 9617^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29121037 + ... + 29121376.

Almost surely, 2^9901210210 is an apocalyptic number.

9901210210 is a deficient number, since it is larger than the sum of its proper divisors (8969331926).

9901210210 is a wasteful number, since it uses less digits than its factorization.

9901210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58242437.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 9901210210 is about 99504.8250588885. The cubic root of 9901210210 is about 2147.3166603433.

The spelling of 9901210210 in words is "nine billion, nine hundred one million, two hundred ten thousand, two hundred ten".