121000221200111 has 8 divisors (see below), whose sum is σ = 132000461030784. Its totient is φ = 110000017989720.

The previous prime is 121000221200093. The next prime is 121000221200141. The reversal of 121000221200111 is 111002122000121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121000221200111 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 (121000221200141) 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, 2003411 + ... + 15684836.

It is an arithmetic number, because the mean of its divisors is an integer number (16500057628848).

Almost surely, 2^{121000221200111} is an apocalyptic number.

121000221200111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121000221200111 is a deficient number, since it is larger than the sum of its proper divisors (11000239830673).

121000221200111 is a wasteful number, since it uses less digits than its factorization.

121000221200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18310141.

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

Adding to 121000221200111 its reverse (111002122000121), we get a palindrome (232002343200232).

The spelling of 121000221200111 in words is "one hundred twenty-one trillion, two hundred twenty-one million, two hundred thousand, one hundred eleven".