1011001022121 has 8 divisors (see below), whose sum is σ = 1352001368224. Its totient is φ = 672000678720.

The previous prime is 1011001022093. The next prime is 1011001022149. The reversal of 1011001022121 is 1212201001101.

It is an interprime number because it is at equal distance from previous prime (1011001022093) and next prime (1011001022149).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1011001022121 - 2⁵ = 1011001022089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011001022097 and 1011001022106.

It is not an unprimeable number, because it can be changed into a prime (1011001022221) 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, 499999495 + ... + 500001516.

It is an arithmetic number, because the mean of its divisors is an integer number (169000171028).

Almost surely, 2^{1011001022121} is an apocalyptic number.

It is an amenable number.

1011001022121 is a deficient number, since it is larger than the sum of its proper divisors (341000346103).

1011001022121 is a wasteful number, since it uses less digits than its factorization.

1011001022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000001351.

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

Adding to 1011001022121 its reverse (1212201001101), we get a palindrome (2223202023222).

The spelling of 1011001022121 in words is "one trillion, eleven billion, one million, twenty-two thousand, one hundred twenty-one".