21022011000212 has 24 divisors (see below), whose sum is σ = 36802395474600. Its totient is φ = 10507041216000.

The previous prime is 21022011000203. The next prime is 21022011000227. The reversal of 21022011000212 is 21200011022012.

It can be written as a sum of positive squares in 4 ways, for example, as 1613016842116 + 19408994158096 = 1270046^2 + 4405564^2 .

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 7 ways as a sum of consecutive naturals, for example, 412162712 + ... + 412213712.

It is an arithmetic number, because the mean of its divisors is an integer number (1533433144775).

Almost surely, 2^{21022011000212} is an apocalyptic number.

It is an amenable number.

21022011000212 is a deficient number, since it is larger than the sum of its proper divisors (15780384474388).

21022011000212 is a wasteful number, since it uses less digits than its factorization.

21022011000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87851 (or 87849 counting only the distinct ones).

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

Adding to 21022011000212 its reverse (21200011022012), we get a palindrome (42222022022224).

The spelling of 21022011000212 in words is "twenty-one trillion, twenty-two billion, eleven million, two hundred twelve", and thus it is an aban number.