121122200111211 has 24 divisors (see below), whose sum is σ = 188416182574256. Its totient is φ = 74535207030720.

The previous prime is 121122200111161. The next prime is 121122200111251. The reversal of 121122200111211 is 112111002221121.

It is a happy number.

121122200111211 is a `hidden beast` number, since 1 + 21 + 122 + 200 + 111 + 211 = 666.

It is not a de Polignac number, because 121122200111211 - 2⁹ = 121122200110699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121122200111251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4903645 + ... + 16318398.

Almost surely, 2^{121122200111211} is an apocalyptic number.

121122200111211 is a deficient number, since it is larger than the sum of its proper divisors (67293982463045).

121122200111211 is a wasteful number, since it uses less digits than its factorization.

121122200111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21270843 (or 21270840 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121122200111211 its reverse (112111002221121), we get a palindrome (233233202332332).

The spelling of 121122200111211 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred million, one hundred eleven thousand, two hundred eleven".