2021101021121 has 8 divisors (see below), whose sum is σ = 2487508949184. Its totient is φ = 1599112895760.

The previous prime is 2021101021033. The next prime is 2021101021139. The reversal of 2021101021121 is 1211201011202.

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

It is a cyclic number.

It is not a de Polignac number, because 2021101021121 - 2¹⁰ = 2021101020097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021101021096 and 2021101021105.

It is not an unprimeable number, because it can be changed into a prime (2021101021421) 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, 11104950575 + ... + 11104950756.

It is an arithmetic number, because the mean of its divisors is an integer number (310938618648).

Almost surely, 2^{2021101021121} is an apocalyptic number.

It is an amenable number.

2021101021121 is a deficient number, since it is larger than the sum of its proper divisors (466407928063).

2021101021121 is a wasteful number, since it uses less digits than its factorization.

2021101021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22209901351.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2021101021121 its reverse (1211201011202), we get a palindrome (3232302032323).

The spelling of 2021101021121 in words is "two trillion, twenty-one billion, one hundred one million, twenty-one thousand, one hundred twenty-one".