1001012121210 has 32 divisors (see below), whose sum is σ = 2402457449472. Its totient is φ = 266933414720.

The previous prime is 1001012121181. The next prime is 1001012121217. The reversal of 1001012121210 is 121212101001.

It is not an unprimeable number, because it can be changed into a prime (1001012121217) 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, 3564967 + ... + 3835493.

It is an arithmetic number, because the mean of its divisors is an integer number (75076795296).

Almost surely, 2^{1001012121210} is an apocalyptic number.

1001012121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001012121210 is an abundant number, since it is smaller than the sum of its proper divisors (1401445328262).

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

1001012121210 is a wasteful number, since it uses less digits than its factorization.

1001012121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393878.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1001012121210 its reverse (121212101001), we get a palindrome (1122224222211).

The spelling of 1001012121210 in words is "one trillion, one billion, twelve million, one hundred twenty-one thousand, two hundred ten".