21102000120212 has 24 divisors (see below), whose sum is σ = 40510696030560. Its totient is φ = 9538232656160.

The previous prime is 21102000120209. The next prime is 21102000120247. The reversal of 21102000120212 is 21202100020112.

It is a congruent number.

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, 1339631543 + ... + 1339647294.

It is an arithmetic number, because the mean of its divisors is an integer number (1687945667940).

Almost surely, 2^{21102000120212} is an apocalyptic number.

21102000120212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21102000120212 is a deficient number, since it is larger than the sum of its proper divisors (19408695910348).

21102000120212 is a wasteful number, since it uses less digits than its factorization.

21102000120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679279031 (or 2679279029 counting only the distinct ones).

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

Adding to 21102000120212 its reverse (21202100020112), we get a palindrome (42304100140324).

It can be divided in two parts, 21102000 and 120212, that added together give a palindrome (21222212).

The spelling of 21102000120212 in words is "twenty-one trillion, one hundred two billion, one hundred twenty thousand, two hundred twelve".