211200012120021 has 8 divisors (see below), whose sum is σ = 286913224012320. Its totient is φ = 138143404153872.

The previous prime is 211200012119981. The next prime is 211200012120037. The reversal of 211200012120021 is 120021210002112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211200012120021 - 2³¹ = 211197864636373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211200012120091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664150981351 + ... + 664150981668.

It is an arithmetic number, because the mean of its divisors is an integer number (35864153001540).

Almost surely, 2^{211200012120021} is an apocalyptic number.

It is an amenable number.

211200012120021 is a deficient number, since it is larger than the sum of its proper divisors (75713211892299).

211200012120021 is a wasteful number, since it uses less digits than its factorization.

211200012120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328301963075.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211200012120021 its reverse (120021210002112), we get a palindrome (331221222122133).

The spelling of 211200012120021 in words is "two hundred eleven trillion, two hundred billion, twelve million, one hundred twenty thousand, twenty-one".