20021212002 has 48 divisors (see below), whose sum is σ = 44051515200. Its totient is φ = 6061804320.

The previous prime is 20021211989. The next prime is 20021212007.

20021212002 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (20021212007) 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, 876624 + ... + 899172.

It is an arithmetic number, because the mean of its divisors is an integer number (917739900).

Almost surely, 2^20021212002 is an apocalyptic number.

20021212002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20021212002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22025757600).

20021212002 is an abundant number, since it is smaller than the sum of its proper divisors (24030303198).

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

20021212002 is a wasteful number, since it uses less digits than its factorization.

20021212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23799 (or 23788 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The spelling of 20021212002 in words is "twenty billion, twenty-one million, two hundred twelve thousand, two".