2021011121001 has 8 divisors (see below), whose sum is σ = 2694693320704. Its totient is φ = 1347334834320.

The previous prime is 2021011120991. The next prime is 2021011121083. The reversal of 2021011121001 is 1001211101202.

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

It is not a de Polignac number, because 2021011121001 - 2¹⁰ = 2021011119977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021011128001) 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, 607465 + ... + 2100246.

It is an arithmetic number, because the mean of its divisors is an integer number (336836665088).

Almost surely, 2^{2021011121001} is an apocalyptic number.

It is an amenable number.

2021011121001 is a deficient number, since it is larger than the sum of its proper divisors (673682199703).

2021011121001 is a wasteful number, since it uses less digits than its factorization.

2021011121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2956511.

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

Adding to 2021011121001 its reverse (1001211101202), we get a palindrome (3022222222203).

The spelling of 2021011121001 in words is "two trillion, twenty-one billion, eleven million, one hundred twenty-one thousand, one".