20212111012002 has 128 divisors (see below), whose sum is σ = 50086701772800. Its totient is φ = 5294923934976.

The previous prime is 20212111011949. The next prime is 20212111012007. The reversal of 20212111012002 is 20021011121202.

It is a super-2 number, since 2×20212111012002² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20212111012007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 263899749 + ... + 263976327.

It is an arithmetic number, because the mean of its divisors is an integer number (391302357600).

Almost surely, 2^{20212111012002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20212111012002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25043350886400).

20212111012002 is an abundant number, since it is smaller than the sum of its proper divisors (29874590760798).

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

20212111012002 is a wasteful number, since it uses less digits than its factorization.

20212111012002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79840.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20212111012002 its reverse (20021011121202), we get a palindrome (40233122133204).

The spelling of 20212111012002 in words is "twenty trillion, two hundred twelve billion, one hundred eleven million, twelve thousand, two".