121042430211 has 16 divisors (see below), whose sum is σ = 168498215424. Its totient is φ = 77144605824.

The previous prime is 121042430207. The next prime is 121042430251. The reversal of 121042430211 is 112034240121.

It is not a de Polignac number, because 121042430211 - 2² = 121042430207 is a prime.

It is a super-2 number, since 2×121042430211² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121042430251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347446 + ... + 602331.

It is an arithmetic number, because the mean of its divisors is an integer number (10531138464).

Almost surely, 2^121042430211 is an apocalyptic number.

121042430211 is a deficient number, since it is larger than the sum of its proper divisors (47455785213).

121042430211 is a wasteful number, since it uses less digits than its factorization.

121042430211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951650.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 121042430211 its reverse (112034240121), we get a palindrome (233076670332).

The spelling of 121042430211 in words is "one hundred twenty-one billion, forty-two million, four hundred thirty thousand, two hundred eleven".