21100332230212 has 24 divisors (see below), whose sum is σ = 37219354767000. Its totient is φ = 10466405918976.

The previous prime is 21100332230189. The next prime is 21100332230221. The reversal of 21100332230212 is 21203223300112.

It can be written as a sum of positive squares in 4 ways, for example, as 4277012792836 + 16823319437376 = 2068094^2 + 4101624^2 .

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, 21398703 + ... + 22363030.

It is an arithmetic number, because the mean of its divisors is an integer number (1550806448625).

Almost surely, 2^{21100332230212} is an apocalyptic number.

It is an amenable number.

21100332230212 is a deficient number, since it is larger than the sum of its proper divisors (16119022536788).

21100332230212 is a wasteful number, since it uses less digits than its factorization.

21100332230212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43762695 (or 43762693 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21100332230212 its reverse (21203223300112), we get a palindrome (42303555530324).

The spelling of 21100332230212 in words is "twenty-one trillion, one hundred billion, three hundred thirty-two million, two hundred thirty thousand, two hundred twelve".