10001209990 has 32 divisors (see below), whose sum is σ = 19718419680. Its totient is φ = 3635326464.

The previous prime is 10001209951. The next prime is 10001210003. The reversal of 10001209990 is 9990210001.

It is a congruent number.

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, 1009392 + ... + 1019251.

It is an arithmetic number, because the mean of its divisors is an integer number (616200615).

Almost surely, 2^10001209990 is an apocalyptic number.

10001209990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10001209990 is a deficient number, since it is larger than the sum of its proper divisors (9717209690).

10001209990 is a wasteful number, since it uses less digits than its factorization.

10001209990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028696.

The product of its (nonzero) digits is 1458, while the sum is 31.

Adding to 10001209990 its reverse (9990210001), we get a palindrome (19991419991).

The spelling of 10001209990 in words is "ten billion, one million, two hundred nine thousand, nine hundred ninety".