111101210000121 has 32 divisors (see below), whose sum is σ = 161728414230528. Its totient is φ = 67281302975040.

The previous prime is 111101210000003. The next prime is 111101210000141. The reversal of 111101210000121 is 121000012101111.

It is not a de Polignac number, because 111101210000121 - 2¹⁵ = 111101209967353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111101210000097 and 111101210000106.

It is not an unprimeable number, because it can be changed into a prime (111101210000141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 528628560 + ... + 528838686.

It is an arithmetic number, because the mean of its divisors is an integer number (5054012944704).

Almost surely, 2^{111101210000121} is an apocalyptic number.

111101210000121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111101210000121 is a deficient number, since it is larger than the sum of its proper divisors (50627204230407).

111101210000121 is a wasteful number, since it uses less digits than its factorization.

111101210000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222621.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111101210000121 its reverse (121000012101111), we get a palindrome (232101222101232).

The spelling of 111101210000121 in words is "one hundred eleven trillion, one hundred one billion, two hundred ten million, one hundred twenty-one", and thus it is an aban number.