121020211101 has 8 divisors (see below), whose sum is σ = 161361888544. Its totient is φ = 80679337200.

The previous prime is 121020211093. The next prime is 121020211111. The reversal of 121020211101 is 101112020121.

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

It is not a de Polignac number, because 121020211101 - 2³ = 121020211093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020211111) 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, 488970 + ... + 693636.

It is an arithmetic number, because the mean of its divisors is an integer number (20170236068).

Almost surely, 2^121020211101 is an apocalyptic number.

It is an amenable number.

121020211101 is a deficient number, since it is larger than the sum of its proper divisors (40341677443).

121020211101 is a wasteful number, since it uses less digits than its factorization.

121020211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401771.

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

Adding to 121020211101 its reverse (101112020121), we get a palindrome (222132231222).

The spelling of 121020211101 in words is "one hundred twenty-one billion, twenty million, two hundred eleven thousand, one hundred one".