121001100101 has 4 divisors (see below), whose sum is σ = 138286971552. Its totient is φ = 103715228652.

The previous prime is 121001100097. The next prime is 121001100109. The reversal of 121001100101 is 101001100121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101001100121 = 48479 ⋅2083399.

It is not a de Polignac number, because 121001100101 - 2² = 121001100097 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 (121001100109) 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, 8642935715 + ... + 8642935728.

It is an arithmetic number, because the mean of its divisors is an integer number (34571742888).

Almost surely, 2^121001100101 is an apocalyptic number.

It is an amenable number.

121001100101 is a deficient number, since it is larger than the sum of its proper divisors (17285871451).

121001100101 is an equidigital number, since it uses as much as digits as its factorization.

121001100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17285871450.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 121001100101 its reverse (101001100121), we get a palindrome (222002200222).

The spelling of 121001100101 in words is "one hundred twenty-one billion, one million, one hundred thousand, one hundred one".