10001212122120 has 32 divisors (see below), whose sum is σ = 30003636366720. Its totient is φ = 2666989899200.

The previous prime is 10001212122119. The next prime is 10001212122127. The reversal of 10001212122120 is 2122121210001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 10001212122120.

It is not an unprimeable number, because it can be changed into a prime (10001212122127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41671717056 + ... + 41671717295.

It is an arithmetic number, because the mean of its divisors is an integer number (937613636460).

Almost surely, 2^{10001212122120} is an apocalyptic number.

10001212122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001212122120 is an abundant number, since it is smaller than the sum of its proper divisors (20002424244600).

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

10001212122120 is a wasteful number, since it uses less digits than its factorization.

10001212122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83343434365 (or 83343434361 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10001212122120 its reverse (2122121210001), we get a palindrome (12123333332121).

The spelling of 10001212122120 in words is "ten trillion, one billion, two hundred twelve million, one hundred twenty-two thousand, one hundred twenty".