121201022111 has 8 divisors (see below), whose sum is σ = 136199142240. Its totient is φ = 107013611232.

The previous prime is 121201022101. The next prime is 121201022119. The reversal of 121201022111 is 111220102121.

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 121201022111 - 2¹⁰ = 121201021087 is a prime.

It is a super-2 number, since 2×121201022111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201022119) 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, 202676996 + ... + 202677593.

It is an arithmetic number, because the mean of its divisors is an integer number (17024892780).

Almost surely, 2^121201022111 is an apocalyptic number.

121201022111 is a deficient number, since it is larger than the sum of its proper divisors (14998120129).

121201022111 is a wasteful number, since it uses less digits than its factorization.

121201022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405354625.

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

Adding to 121201022111 its reverse (111220102121), we get a palindrome (232421124232).

The spelling of 121201022111 in words is "one hundred twenty-one billion, two hundred one million, twenty-two thousand, one hundred eleven".