121210220201111 has 8 divisors (see below), whose sum is σ = 121606606764720. Its totient is φ = 120813843800448.

The previous prime is 121210220201087. The next prime is 121210220201129. The reversal of 121210220201111 is 111102022012121.

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 121210220201111 - 2¹⁸ = 121210219938967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121210220201111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210220201171) 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, 21730085 + ... + 26732321.

It is an arithmetic number, because the mean of its divisors is an integer number (15200825845590).

Almost surely, 2^{121210220201111} is an apocalyptic number.

121210220201111 is a deficient number, since it is larger than the sum of its proper divisors (396386563609).

121210220201111 is an equidigital number, since it uses as much as digits as its factorization.

121210220201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5081473.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121210220201111 its reverse (111102022012121), we get a palindrome (232312242213232).

The spelling of 121210220201111 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred twenty million, two hundred one thousand, one hundred eleven".