100121111221101 has 32 divisors (see below), whose sum is σ = 143154629009280. Its totient is φ = 62019001841664.

The previous prime is 100121111221097. The next prime is 100121111221121. The reversal of 100121111221101 is 101122111121001.

It is not a de Polignac number, because 100121111221101 - 2² = 100121111221097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121111221121) 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, 2801536 + ... + 14425353.

It is an arithmetic number, because the mean of its divisors is an integer number (4473582156540).

Almost surely, 2^{100121111221101} is an apocalyptic number.

It is an amenable number.

100121111221101 is a deficient number, since it is larger than the sum of its proper divisors (43033517788179).

100121111221101 is a wasteful number, since it uses less digits than its factorization.

100121111221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17228365.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 100121111221101 its reverse (101122111121001), we get a palindrome (201243222342102).

The spelling of 100121111221101 in words is "one hundred trillion, one hundred twenty-one billion, one hundred eleven million, two hundred twenty-one thousand, one hundred one".