210012122112221 has 8 divisors (see below), whose sum is σ = 246727528076064. Its totient is φ = 176233948625520.

The previous prime is 210012122112197. The next prime is 210012122112223. The reversal of 210012122112221 is 122211221210012.

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-210012122112221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210012122112193 and 210012122112202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210012122112223) 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, 734308119131 + ... + 734308119416.

It is an arithmetic number, because the mean of its divisors is an integer number (30840941009508).

Almost surely, 2^{210012122112221} is an apocalyptic number.

It is an amenable number.

210012122112221 is a deficient number, since it is larger than the sum of its proper divisors (36715405963843).

210012122112221 is a wasteful number, since it uses less digits than its factorization.

210012122112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468616238571.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 210012122112221 its reverse (122211221210012), we get a palindrome (332223343322233).

The spelling of 210012122112221 in words is "two hundred ten trillion, twelve billion, one hundred twenty-two million, one hundred twelve thousand, two hundred twenty-one".