121210100211 has 16 divisors (see below), whose sum is σ = 168658861824. Its totient is φ = 77284816224.

The previous prime is 121210100197. The next prime is 121210100213. The reversal of 121210100211 is 112001012121.

It is not a de Polignac number, because 121210100211 - 2⁷ = 121210100083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121210100213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 560445 + ... + 746001.

It is an arithmetic number, because the mean of its divisors is an integer number (10541178864).

Almost surely, 2^121210100211 is an apocalyptic number.

121210100211 is a deficient number, since it is larger than the sum of its proper divisors (47448761613).

121210100211 is a wasteful number, since it uses less digits than its factorization.

121210100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195050.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121210100211 its reverse (112001012121), we get a palindrome (233211112332).

The spelling of 121210100211 in words is "one hundred twenty-one billion, two hundred ten million, one hundred thousand, two hundred eleven".