1001210112021 has 24 divisors (see below), whose sum is σ = 1552937001600. Its totient is φ = 572105443392.

The previous prime is 1001210112013. The next prime is 1001210112037. The reversal of 1001210112021 is 1202110121001.

It is not a de Polignac number, because 1001210112021 - 2³ = 1001210112013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001210111988 and 1001210112006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001210112521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8675505 + ... + 8790153.

It is an arithmetic number, because the mean of its divisors is an integer number (64705708400).

Almost surely, 2^{1001210112021} is an apocalyptic number.

It is an amenable number.

1001210112021 is a deficient number, since it is larger than the sum of its proper divisors (551726889579).

1001210112021 is a wasteful number, since it uses less digits than its factorization.

1001210112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174073 (or 174066 counting only the distinct ones).

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

Adding to 1001210112021 its reverse (1202110121001), we get a palindrome (2203320233022).

The spelling of 1001210112021 in words is "one trillion, one billion, two hundred ten million, one hundred twelve thousand, twenty-one".