21020211200012 has 6 divisors (see below), whose sum is σ = 36785369600028. Its totient is φ = 10510105600004.

The previous prime is 21020211199993. The next prime is 21020211200017. The reversal of 21020211200012 is 21000211202012.

It is a self number, because there is not a number n which added to its sum of digits gives 21020211200012.

It is not an unprimeable number, because it can be changed into a prime (21020211200017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2627526399998 + ... + 2627526400005.

It is an arithmetic number, because the mean of its divisors is an integer number (6130894933338).

Almost surely, 2^{21020211200012} is an apocalyptic number.

It is an amenable number.

21020211200012 is a deficient number, since it is larger than the sum of its proper divisors (15765158400016).

21020211200012 is a wasteful number, since it uses less digits than its factorization.

21020211200012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5255052800007 (or 5255052800005 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21020211200012 its reverse (21000211202012), we get a palindrome (42020422402024).

It can be divided in two parts, 2102021 and 1200012, that added together give a palindrome (3302033).

The spelling of 21020211200012 in words is "twenty-one trillion, twenty billion, two hundred eleven million, two hundred thousand, twelve".