120121210011 has 16 divisors (see below), whose sum is σ = 176451683328. Its totient is φ = 72079932000.

The previous prime is 120121210007. The next prime is 120121210021. The reversal of 120121210011 is 110012121021.

It is not a de Polignac number, because 120121210011 - 2² = 120121210007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120121210021) 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, 18016651 + ... + 18023316.

It is an arithmetic number, because the mean of its divisors is an integer number (11028230208).

Almost surely, 2^120121210011 is an apocalyptic number.

120121210011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120121210011 is a deficient number, since it is larger than the sum of its proper divisors (56330473317).

120121210011 is a wasteful number, since it uses less digits than its factorization.

120121210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36040082.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 120121210011 its reverse (110012121021), we get a palindrome (230133331032).

It can be divided in two parts, 1201 and 21210011, that added together give a palindrome (21211212).

The spelling of 120121210011 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred ten thousand, eleven".