1001002110121 has 24 divisors (see below), whose sum is σ = 1099490293440. Its totient is φ = 910784362176.

The previous prime is 1001002110113. The next prime is 1001002110131. The reversal of 1001002110121 is 1210112001001.

It is not a de Polignac number, because 1001002110121 - 2³ = 1001002110113 is a prime.

It is a super-2 number, since 2×1001002110121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001002110098 and 1001002110107.

It is not an unprimeable number, because it can be changed into a prime (1001002110131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6076575 + ... + 6239131.

It is an arithmetic number, because the mean of its divisors is an integer number (45812095560).

Almost surely, 2^{1001002110121} is an apocalyptic number.

It is an amenable number.

1001002110121 is a deficient number, since it is larger than the sum of its proper divisors (98488183319).

1001002110121 is a wasteful number, since it uses less digits than its factorization.

1001002110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163105 (or 163092 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1001002110121 its reverse (1210112001001), we get a palindrome (2211114111122).

The spelling of 1001002110121 in words is "one trillion, one billion, two million, one hundred ten thousand, one hundred twenty-one".