121000012200111 has 128 divisors (see below), whose sum is σ = 189206175744000. Its totient is φ = 68035813401600.

The previous prime is 121000012200077. The next prime is 121000012200161. The reversal of 121000012200111 is 111002210000121.

It is not a de Polignac number, because 121000012200111 - 2⁶ = 121000012200047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000012200161) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13887291891 + ... + 13887300603.

It is an arithmetic number, because the mean of its divisors is an integer number (1478173248000).

Almost surely, 2^{121000012200111} is an apocalyptic number.

121000012200111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121000012200111 is a deficient number, since it is larger than the sum of its proper divisors (68206163543889).

121000012200111 is a wasteful number, since it uses less digits than its factorization.

121000012200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10277.

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

Adding to 121000012200111 its reverse (111002210000121), we get a palindrome (232002222200232).

The spelling of 121000012200111 in words is "one hundred twenty-one trillion, twelve million, two hundred thousand, one hundred eleven".