100121120101 has 4 divisors (see below), whose sum is σ = 106010597772. Its totient is φ = 94231642432.

The previous prime is 100121120087. The next prime is 100121120147. The reversal of 100121120101 is 101021121001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 79650950625 + 20470169476 = 282225^2 + 143074^2 .

It is a cyclic number.

It is not a de Polignac number, because 100121120101 - 2²⁷ = 99986902373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121160101) 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, 2944738810 + ... + 2944738843.

It is an arithmetic number, because the mean of its divisors is an integer number (26502649443).

Almost surely, 2^100121120101 is an apocalyptic number.

It is an amenable number.

100121120101 is a deficient number, since it is larger than the sum of its proper divisors (5889477671).

100121120101 is an equidigital number, since it uses as much as digits as its factorization.

100121120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5889477670.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 100121120101 its reverse (101021121001), we get a palindrome (201142241102).

The spelling of 100121120101 in words is "one hundred billion, one hundred twenty-one million, one hundred twenty thousand, one hundred one".