12121102101 has 4 divisors (see below), whose sum is σ = 16161469472. Its totient is φ = 8080734732.

The previous prime is 12121102093. The next prime is 12121102111. The reversal of 12121102101 is 10120112121.

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 not a de Polignac number, because 12121102101 - 2³ = 12121102093 is a prime.

It is a super-2 number, since 2×12121102101² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121102111) 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, 2020183681 + ... + 2020183686.

It is an arithmetic number, because the mean of its divisors is an integer number (4040367368).

Almost surely, 2^12121102101 is an apocalyptic number.

It is an amenable number.

12121102101 is a deficient number, since it is larger than the sum of its proper divisors (4040367371).

12121102101 is an equidigital number, since it uses as much as digits as its factorization.

12121102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040367370.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12121102101 its reverse (10120112121), we get a palindrome (22241214222).

The spelling of 12121102101 in words is "twelve billion, one hundred twenty-one million, one hundred two thousand, one hundred one".