12013212101 has 24 divisors (see below), whose sum is σ = 13570703424. Its totient is φ = 10546200000.

The previous prime is 12013212049. The next prime is 12013212109. The reversal of 12013212101 is 10121231021.

It is not a de Polignac number, because 12013212101 - 2¹⁴ = 12013195717 is a prime.

It is a super-2 number, since 2×12013212101² (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 (12013212109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6669401 + ... + 6671201.

It is an arithmetic number, because the mean of its divisors is an integer number (565445976).

Almost surely, 2^12013212101 is an apocalyptic number.

12013212101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12013212101 is a deficient number, since it is larger than the sum of its proper divisors (1557491323).

12013212101 is a wasteful number, since it uses less digits than its factorization.

12013212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505 (or 2474 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12013212101 its reverse (10121231021), we get a palindrome (22134443122).

The spelling of 12013212101 in words is "twelve billion, thirteen million, two hundred twelve thousand, one hundred one".