21021200101112 has 8 divisors (see below), whose sum is σ = 39414750189600. Its totient is φ = 10510600050552.

The previous prime is 21021200101079. The next prime is 21021200101241. The reversal of 21021200101112 is 21110100212012.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1313825006312 + ... + 1313825006327.

It is an arithmetic number, because the mean of its divisors is an integer number (4926843773700).

Almost surely, 2^{21021200101112} is an apocalyptic number.

It is an amenable number.

21021200101112 is a deficient number, since it is larger than the sum of its proper divisors (18393550088488).

21021200101112 is a wasteful number, since it uses less digits than its factorization.

21021200101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627650012645 (or 2627650012641 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21021200101112 its reverse (21110100212012), we get a palindrome (42131300313124).

The spelling of 21021200101112 in words is "twenty-one trillion, twenty-one billion, two hundred million, one hundred one thousand, one hundred twelve".