211101200012021 has 16 divisors (see below), whose sum is σ = 232115262332928. Its totient is φ = 190391104940400.

The previous prime is 211101200011973. The next prime is 211101200012089. The reversal of 211101200012021 is 120210002101112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211101200012021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211101200011987 and 211101200012005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211101200014021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30335546 + ... + 36639428.

It is an arithmetic number, because the mean of its divisors is an integer number (14507203895808).

Almost surely, 2^{211101200012021} is an apocalyptic number.

It is an amenable number.

211101200012021 is a deficient number, since it is larger than the sum of its proper divisors (21014062320907).

211101200012021 is a wasteful number, since it uses less digits than its factorization.

211101200012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6327992.

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

Adding to 211101200012021 its reverse (120210002101112), we get a palindrome (331311202113133).

The spelling of 211101200012021 in words is "two hundred eleven trillion, one hundred one billion, two hundred million, twelve thousand, twenty-one".