1001212112120 has 64 divisors (see below), whose sum is σ = 2494200124800. Its totient is φ = 358643134080.

The previous prime is 1001212112119. The next prime is 1001212112171. The reversal of 1001212112120 is 212112121001.

It is a junction number, because it is equal to n+sod(n) for n = 1001212112095 and 1001212112104.

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, 16951730 + ... + 17010689.

It is an arithmetic number, because the mean of its divisors is an integer number (38971876950).

Almost surely, 2^{1001212112120} is an apocalyptic number.

1001212112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001212112120 is an abundant number, since it is smaller than the sum of its proper divisors (1492988012680).

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

1001212112120 is a wasteful number, since it uses less digits than its factorization.

1001212112120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33962508 (or 33962504 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1001212112120 its reverse (212112121001), we get a palindrome (1213324233121).

The spelling of 1001212112120 in words is "one trillion, one billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty".