21020022002012 has 12 divisors (see below), whose sum is σ = 40129132913016. Its totient is φ = 9554555455440.

The previous prime is 21020022001981. The next prime is 21020022002029.

21020022002012 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 238863886343 + ... + 238863886430.

It is an arithmetic number, because the mean of its divisors is an integer number (3344094409418).

Almost surely, 2^{21020022002012} is an apocalyptic number.

21020022002012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21020022002012 is a deficient number, since it is larger than the sum of its proper divisors (19109110911004).

21020022002012 is a wasteful number, since it uses less digits than its factorization.

21020022002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477727772788 (or 477727772786 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

It can be divided in two parts, 2102002 and 2002012, that added together give a palindrome (4104014).

The spelling of 21020022002012 in words is "twenty-one trillion, twenty billion, twenty-two million, two thousand, twelve".