120021220011 has 128 divisors (see below), whose sum is σ = 209815142400. Its totient is φ = 59209920000.

The previous prime is 120021219979. The next prime is 120021220103. The reversal of 120021220011 is 110022120021.

It is not a de Polignac number, because 120021220011 - 2⁵ = 120021219979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120021220211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 121110726 + ... + 121111716.

It is an arithmetic number, because the mean of its divisors is an integer number (1639180800).

Almost surely, 2^120021220011 is an apocalyptic number.

120021220011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120021220011 is a deficient number, since it is larger than the sum of its proper divisors (89793922389).

120021220011 is a wasteful number, since it uses less digits than its factorization.

120021220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 120021220011 its reverse (110022120021), we get a palindrome (230043340032).

The spelling of 120021220011 in words is "one hundred twenty billion, twenty-one million, two hundred twenty thousand, eleven".