12002021010 has 48 divisors (see below), whose sum is σ = 35663150016. Its totient is φ = 2743318944.

The previous prime is 12002020999. The next prime is 12002021021. The reversal of 12002021010 is 1012020021.

It is an interprime number because it is at equal distance from previous prime (12002020999) and next prime (12002021021).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12002020983 and 12002021001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9524784 + ... + 9526043.

It is an arithmetic number, because the mean of its divisors is an integer number (742982292).

Almost surely, 2^12002021010 is an apocalyptic number.

12002021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12002021010 is an abundant number, since it is smaller than the sum of its proper divisors (23661129006).

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

12002021010 is a wasteful number, since it uses less digits than its factorization.

12002021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19050847 (or 19050844 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12002021010 its reverse (1012020021), we get a palindrome (13014041031).

The spelling of 12002021010 in words is "twelve billion, two million, twenty-one thousand, ten".