12002121101 has 8 divisors (see below), whose sum is σ = 12298406904. Its totient is φ = 11706004480.

The previous prime is 12002121049. The next prime is 12002121121. The reversal of 12002121101 is 10112120021.

It can be written as a sum of positive squares in 4 ways, for example, as 1029768100 + 10972353001 = 32090^2 + 104749^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12002121101 - 2⁶ = 12002121037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002121121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107831 + ... + 188763.

It is an arithmetic number, because the mean of its divisors is an integer number (1537300863).

Almost surely, 2^12002121101 is an apocalyptic number.

It is an amenable number.

12002121101 is a deficient number, since it is larger than the sum of its proper divisors (296285803).

12002121101 is an equidigital number, since it uses as much as digits as its factorization.

12002121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84591.

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

Adding to 12002121101 its reverse (10112120021), we get a palindrome (22114241122).

The spelling of 12002121101 in words is "twelve billion, two million, one hundred twenty-one thousand, one hundred one".