12021102101 has 12 divisors (see below), whose sum is σ = 12810715812. Its totient is φ = 11277746688.

The previous prime is 12021102061. The next prime is 12021102103. The reversal of 12021102101 is 10120112021.

It can be written as a sum of positive squares in 6 ways, for example, as 558187876 + 11462914225 = 23626^2 + 107065^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12021102101 is a prime.

It is a super-2 number, since 2×12021102101² (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 (12021102103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24011 + ... + 156903.

It is an arithmetic number, because the mean of its divisors is an integer number (1067559651).

Almost surely, 2^12021102101 is an apocalyptic number.

It is an amenable number.

12021102101 is a deficient number, since it is larger than the sum of its proper divisors (789613711).

12021102101 is a wasteful number, since it uses less digits than its factorization.

12021102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133240 (or 133223 counting only the distinct ones).

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

Adding to 12021102101 its reverse (10120112021), we get a palindrome (22141214122).

The spelling of 12021102101 in words is "twelve billion, twenty-one million, one hundred two thousand, one hundred one".