211000220202121 has 8 divisors (see below), whose sum is σ = 241145574076800. Its totient is φ = 180855482646048.

The previous prime is 211000220202053. The next prime is 211000220202127. The reversal of 211000220202121 is 121202022000112.

It is a happy number.

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

It is not a de Polignac number, because 211000220202121 - 2¹⁹ = 211000219677833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211000220202095 and 211000220202104.

It is not an unprimeable number, because it can be changed into a prime (211000220202127) 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, 153345796 + ... + 154715653.

It is an arithmetic number, because the mean of its divisors is an integer number (30143196759600).

Almost surely, 2^{211000220202121} is an apocalyptic number.

It is an amenable number.

211000220202121 is a deficient number, since it is larger than the sum of its proper divisors (30145353874679).

211000220202121 is an equidigital number, since it uses as much as digits as its factorization.

211000220202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308159303.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211000220202121 its reverse (121202022000112), we get a palindrome (332202242202233).

The spelling of 211000220202121 in words is "two hundred eleven trillion, two hundred twenty million, two hundred two thousand, one hundred twenty-one".