120212121211 has 16 divisors (see below), whose sum is σ = 153055224000. Its totient is φ = 91833130368.

The previous prime is 120212121209. The next prime is 120212121217. The reversal of 120212121211 is 112121212021.

It is not a de Polignac number, because 120212121211 - 2¹ = 120212121209 is a prime.

It is a super-2 number, since 2×120212121211² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120212121217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22773436 + ... + 22778713.

It is an arithmetic number, because the mean of its divisors is an integer number (9565951500).

Almost surely, 2^120212121211 is an apocalyptic number.

120212121211 is a deficient number, since it is larger than the sum of its proper divisors (32843102789).

120212121211 is a wasteful number, since it uses less digits than its factorization.

120212121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45552198.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 120212121211 its reverse (112121212021), we get a palindrome (232333333232).

The spelling of 120212121211 in words is "one hundred twenty billion, two hundred twelve million, one hundred twenty-one thousand, two hundred eleven".