100121211200111 has 4 divisors (see below), whose sum is σ = 100189834375800. Its totient is φ = 100052588024424.

The previous prime is 100121211200051. The next prime is 100121211200113. The reversal of 100121211200111 is 111002112121001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100121211200111 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 (100121211200113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34311585656 + ... + 34311588573.

It is an arithmetic number, because the mean of its divisors is an integer number (25047458593950).

Almost surely, 2^{100121211200111} is an apocalyptic number.

100121211200111 is a deficient number, since it is larger than the sum of its proper divisors (68623175689).

100121211200111 is an equidigital number, since it uses as much as digits as its factorization.

100121211200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68623175688.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 100121211200111 its reverse (111002112121001), we get a palindrome (211123323321112).

The spelling of 100121211200111 in words is "one hundred trillion, one hundred twenty-one billion, two hundred eleven million, two hundred thousand, one hundred eleven".