21000212211332 has 24 divisors (see below), whose sum is σ = 36757543046616. Its totient is φ = 10498057291008.

The previous prime is 21000212211323. The next prime is 21000212211443. The reversal of 21000212211332 is 23311221200012.

It can be written as a sum of positive squares in 4 ways, for example, as 306665643076 + 20693546568256 = 553774^2 + 4549016^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651496688 + ... + 651528920.

It is an arithmetic number, because the mean of its divisors is an integer number (1531564293609).

Almost surely, 2^{21000212211332} is an apocalyptic number.

It is an amenable number.

21000212211332 is a deficient number, since it is larger than the sum of its proper divisors (15757330835284).

21000212211332 is a wasteful number, since it uses less digits than its factorization.

21000212211332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58967 (or 58965 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21000212211332 its reverse (23311221200012), we get a palindrome (44311433411344).

The spelling of 21000212211332 in words is "twenty-one trillion, two hundred twelve million, two hundred eleven thousand, three hundred thirty-two".