121200000211 has 2 divisors, whose sum is σ = 121200000212. Its totient is φ = 121200000210.

The previous prime is 121200000203. The next prime is 121200000263. The reversal of 121200000211 is 112000002121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121200000211 - 2³ = 121200000203 is a prime.

It is a super-2 number, since 2×121200000211² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121200001211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600000105 + 60600000106.

It is an arithmetic number, because the mean of its divisors is an integer number (60600000106).

Almost surely, 2^121200000211 is an apocalyptic number.

121200000211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121200000211 is an equidigital number, since it uses as much as digits as its factorization.

121200000211 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 10.

Adding to 121200000211 its reverse (112000002121), we get a palindrome (233200002332).

It can be divided in two parts, 1 and 21200000211, that added together give a palindrome (21200000212).

The spelling of 121200000211 in words is "one hundred twenty-one billion, two hundred million, two hundred eleven", and thus it is an aban number.