212102010211021 has 8 divisors (see below), whose sum is σ = 242805628998464. Its totient is φ = 181499224327200.

The previous prime is 212102010211009. The next prime is 212102010211093. The reversal of 212102010211021 is 120112010201212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212102010211021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212102010210986 and 212102010211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102010311021) 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, 25208221395 + ... + 25208229808.

It is an arithmetic number, because the mean of its divisors is an integer number (30350703624808).

Almost surely, 2^{212102010211021} is an apocalyptic number.

It is an amenable number.

212102010211021 is a deficient number, since it is larger than the sum of its proper divisors (30703618787443).

212102010211021 is an equidigital number, since it uses as much as digits as its factorization.

212102010211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50416451811.

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

Adding to 212102010211021 its reverse (120112010201212), we get a palindrome (332214020412233).

The spelling of 212102010211021 in words is "two hundred twelve trillion, one hundred two billion, ten million, two hundred eleven thousand, twenty-one".