10212311109820 has 48 divisors (see below), whose sum is σ = 21670540597440. Its totient is φ = 4042314996224.

The previous prime is 10212311109739. The next prime is 10212311109821. The reversal of 10212311109820 is 2890111321201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212311109821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5010160 + ... + 6747319.

It is an arithmetic number, because the mean of its divisors is an integer number (451469595780).

Almost surely, 2^{10212311109820} is an apocalyptic number.

10212311109820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10212311109820 is an abundant number, since it is smaller than the sum of its proper divisors (11458229487620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10212311109820 is a wasteful number, since it uses less digits than its factorization.

10212311109820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11757942 (or 11757940 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 31.

The spelling of 10212311109820 in words is "ten trillion, two hundred twelve billion, three hundred eleven million, one hundred nine thousand, eight hundred twenty".