10203121219990 has 8 divisors (see below), whose sum is σ = 18365618196000. Its totient is φ = 4081248487992.

The previous prime is 10203121219979. The next prime is 10203121220107. The reversal of 10203121219990 is 9991212130201.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510156060990 + ... + 510156061009.

It is an arithmetic number, because the mean of its divisors is an integer number (2295702274500).

Almost surely, 2^{10203121219990} is an apocalyptic number.

10203121219990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10203121219990 is a deficient number, since it is larger than the sum of its proper divisors (8162496976010).

10203121219990 is a wasteful number, since it uses less digits than its factorization.

10203121219990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020312122006.

The product of its (nonzero) digits is 17496, while the sum is 40.

The spelling of 10203121219990 in words is "ten trillion, two hundred three billion, one hundred twenty-one million, two hundred nineteen thousand, nine hundred ninety".