121120202111211 has 24 divisors (see below), whose sum is σ = 178572395523600. Its totient is φ = 79081044584256.

The previous prime is 121120202111177. The next prime is 121120202111219. The reversal of 121120202111211 is 112111202021121.

It is a happy number.

121120202111211 is a `hidden beast` number, since 1 + 21 + 120 + 202 + 111 + 211 = 666.

It is not a de Polignac number, because 121120202111211 - 2⁶ = 121120202111147 is a prime.

It is a super-2 number, since 2×121120202111211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121120202111219) 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, 227670361 + ... + 228201738.

It is an arithmetic number, because the mean of its divisors is an integer number (7440516480150).

Almost surely, 2^{121120202111211} is an apocalyptic number.

121120202111211 is a deficient number, since it is larger than the sum of its proper divisors (57452193412389).

121120202111211 is a wasteful number, since it uses less digits than its factorization.

121120202111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455872715 (or 455872712 counting only the distinct ones).

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

Adding to 121120202111211 its reverse (112111202021121), we get a palindrome (233231404132332).

The spelling of 121120202111211 in words is "one hundred twenty-one trillion, one hundred twenty billion, two hundred two million, one hundred eleven thousand, two hundred eleven".