12020213502 has 48 divisors (see below), whose sum is σ = 28461438720. Its totient is φ = 3636075600.

The previous prime is 12020213501. The next prime is 12020213503. The reversal of 12020213502 is 20531202021.

12020213502 is a `hidden beast` number, since 120 + 20 + 21 + 3 + 502 = 666.

It is an interprime number because it is at equal distance from previous prime (12020213501) and next prime (12020213503).

It is a super-3 number, since 3×12020213502³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020213501) 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, 59899 + ... + 166217.

It is an arithmetic number, because the mean of its divisors is an integer number (592946640).

Almost surely, 2^12020213502 is an apocalyptic number.

12020213502 is an abundant number, since it is smaller than the sum of its proper divisors (16441225218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12020213502 is a wasteful number, since it uses less digits than its factorization.

12020213502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106909 (or 106906 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 12020213502 its reverse (20531202021), we get a palindrome (32551415523).

It can be divided in two parts, 12020 and 213502, that added together give a palindrome (225522).

The spelling of 12020213502 in words is "twelve billion, twenty million, two hundred thirteen thousand, five hundred two".