121020202111 has 8 divisors (see below), whose sum is σ = 121149129024. Its totient is φ = 120891327360.

The previous prime is 121020202103. The next prime is 121020202133. The reversal of 121020202111 is 111202020121.

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 121020202111 - 2³ = 121020202103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121020202091 and 121020202100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020202181) 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, 6067491 + ... + 6087403.

It is an arithmetic number, because the mean of its divisors is an integer number (15143641128).

Almost surely, 2^121020202111 is an apocalyptic number.

121020202111 is a deficient number, since it is larger than the sum of its proper divisors (128926913).

121020202111 is a wasteful number, since it uses less digits than its factorization.

121020202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26081.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121020202111 its reverse (111202020121), we get a palindrome (232222222232).

The spelling of 121020202111 in words is "one hundred twenty-one billion, twenty million, two hundred two thousand, one hundred eleven".