121021010020221 has 8 divisors (see below), whose sum is σ = 161361413469984. Its totient is φ = 80680639958640.

The previous prime is 121021010020213. The next prime is 121021010020243. The reversal of 121021010020221 is 122020010120121.

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

It is not a de Polignac number, because 121021010020221 - 2³ = 121021010020213 is a prime.

It is a super-3 number, since 3×121021010020221³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121021010020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021010020721) 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, 1911691 + ... + 15674711.

It is an arithmetic number, because the mean of its divisors is an integer number (20170176683748).

Almost surely, 2^{121021010020221} is an apocalyptic number.

It is an amenable number.

121021010020221 is a deficient number, since it is larger than the sum of its proper divisors (40340403449763).

121021010020221 is a wasteful number, since it uses less digits than its factorization.

121021010020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16694091.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121021010020221 its reverse (122020010120121), we get a palindrome (243041020140342).

The spelling of 121021010020221 in words is "one hundred twenty-one trillion, twenty-one billion, ten million, twenty thousand, two hundred twenty-one".