121012211 has 2 divisors, whose sum is σ = 121012212. Its totient is φ = 121012210.

The previous prime is 121012207. The next prime is 121012217. The reversal of 121012211 is 112210121.

It is a weak prime.

It is an emirp because it is prime and its reverse (112210121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121012211 - 2² = 121012207 is a prime.

It is a super-2 number, since 2×121012211² = 29287910422217042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121012192 and 121012201.

It is not a weakly prime, because it can be changed into another prime (121012217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506105 + 60506106.

It is an arithmetic number, because the mean of its divisors is an integer number (60506106).

Almost surely, 2^121012211 is an apocalyptic number.

121012211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012211 is an equidigital number, since it uses as much as digits as its factorization.

121012211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 121012211 is about 11000.5550314518. Note that the first 3 decimals coincide. The cubic root of 121012211 is about 494.6253819673.

Adding to 121012211 its reverse (112210121), we get a palindrome (233222332).

The spelling of 121012211 in words is "one hundred twenty-one million, twelve thousand, two hundred eleven".