121200222011 has 16 divisors (see below), whose sum is σ = 136535884800. Its totient is φ = 106586863200.

The previous prime is 121200221999. The next prime is 121200222023. The reversal of 121200222011 is 110222002121.

It is an interprime number because it is at equal distance from previous prime (121200221999) and next prime (121200222023).

It is a cyclic number.

It is not a de Polignac number, because 121200222011 - 2¹⁰ = 121200220987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121200222211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 839885 + ... + 973553.

It is an arithmetic number, because the mean of its divisors is an integer number (8533492800).

Almost surely, 2^121200222011 is an apocalyptic number.

121200222011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121200222011 is a deficient number, since it is larger than the sum of its proper divisors (15335662789).

121200222011 is a wasteful number, since it uses less digits than its factorization.

121200222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136370.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121200222011 its reverse (110222002121), we get a palindrome (231422224132).

The spelling of 121200222011 in words is "one hundred twenty-one billion, two hundred million, two hundred twenty-two thousand, eleven".