121202212210211 has 6 divisors (see below), whose sum is σ = 133222266313836. Its totient is φ = 110183829281900.

The previous prime is 121202212210187. The next prime is 121202212210213. The reversal of 121202212210211 is 112012212202121.

It is not a de Polignac number, because 121202212210211 - 2⁶ = 121202212210147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121202212210213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 500835587525 + ... + 500835587766.

It is an arithmetic number, because the mean of its divisors is an integer number (22203711052306).

Almost surely, 2^{121202212210211} is an apocalyptic number.

121202212210211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121202212210211 is a deficient number, since it is larger than the sum of its proper divisors (12020054103625).

121202212210211 is a wasteful number, since it uses less digits than its factorization.

121202212210211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001671175313 (or 1001671175302 counting only the distinct ones).

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

Adding to 121202212210211 its reverse (112012212202121), we get a palindrome (233214424412332).

The spelling of 121202212210211 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred twelve million, two hundred ten thousand, two hundred eleven".