121100202101 has 4 divisors (see below), whose sum is σ = 122907667872. Its totient is φ = 119292736332.

The previous prime is 121100202089. The next prime is 121100202103. The reversal of 121100202101 is 101202001121.

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.

It is a cyclic number.

It is not a de Polignac number, because 121100202101 - 2¹⁸ = 121099939957 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 (121100202103) 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, 903732785 + ... + 903732918.

It is an arithmetic number, because the mean of its divisors is an integer number (30726916968).

Almost surely, 2^121100202101 is an apocalyptic number.

It is an amenable number.

121100202101 is a deficient number, since it is larger than the sum of its proper divisors (1807465771).

121100202101 is an equidigital number, since it uses as much as digits as its factorization.

121100202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807465770.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121100202101 its reverse (101202001121), we get a palindrome (222302203222).

The spelling of 121100202101 in words is "one hundred twenty-one billion, one hundred million, two hundred two thousand, one hundred one".