121101220211 has 2 divisors, whose sum is σ = 121101220212. Its totient is φ = 121101220210.

The previous prime is 121101220171. The next prime is 121101220277. The reversal of 121101220211 is 112022101121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121101220211 is a prime.

It is a super-2 number, since 2×121101220211² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121101220711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550610105 + 60550610106.

It is an arithmetic number, because the mean of its divisors is an integer number (60550610106).

Almost surely, 2^121101220211 is an apocalyptic number.

121101220211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121101220211 is an equidigital number, since it uses as much as digits as its factorization.

121101220211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121101220211 its reverse (112022101121), we get a palindrome (233123321332).

It can be divided in two parts, 12110 and 1220211, that added together give a palindrome (1232321).

The spelling of 121101220211 in words is "one hundred twenty-one billion, one hundred one million, two hundred twenty thousand, two hundred eleven".