12002220020 has 48 divisors (see below), whose sum is σ = 28814822400. Its totient is φ = 4113690624.

The previous prime is 12002219981. The next prime is 12002220037. The reversal of 12002220020 is 2002220021.

It is a junction number, because it is equal to n+sod(n) for n = 12002219983 and 12002220010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 471581 + ... + 496379.

It is an arithmetic number, because the mean of its divisors is an integer number (600308800).

Almost surely, 2^12002220020 is an apocalyptic number.

12002220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12002220020 is an abundant number, since it is smaller than the sum of its proper divisors (16812602380).

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

12002220020 is a wasteful number, since it uses less digits than its factorization.

12002220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28272 (or 28270 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 12002220020 its reverse (2002220021), we get a palindrome (14004440041).

Subtracting from 12002220020 its reverse (2002220021), we obtain a palindrome (9999999999).

The spelling of 12002220020 in words is "twelve billion, two million, two hundred twenty thousand, twenty".