211012212010021 has 8 divisors (see below), whose sum is σ = 223425638038080. Its totient is φ = 198598890756288.

The previous prime is 211012212010009. The next prime is 211012212010109. The reversal of 211012212010021 is 120010212210112.

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

It is a cyclic number.

It is not a de Polignac number, because 211012212010021 - 2⁴⁵ = 175827839921189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211012212009977 and 211012212010004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012212050021) 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, 22028241 + ... + 30120886.

It is an arithmetic number, because the mean of its divisors is an integer number (27928204754760).

Almost surely, 2^{211012212010021} is an apocalyptic number.

It is an amenable number.

211012212010021 is a deficient number, since it is larger than the sum of its proper divisors (12413426028059).

211012212010021 is a wasteful number, since it uses less digits than its factorization.

211012212010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52387163.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211012212010021 its reverse (120010212210112), we get a palindrome (331022424220133).

The spelling of 211012212010021 in words is "two hundred eleven trillion, twelve billion, two hundred twelve million, ten thousand, twenty-one".