120011211021 has 24 divisors (see below), whose sum is σ = 174890054880. Its totient is φ = 73162804416.

The previous prime is 120011211011. The next prime is 120011211031. The reversal of 120011211021 is 120112110021.

It is an interprime number because it is at equal distance from previous prime (120011211011) and next prime (120011211031).

It is not a de Polignac number, because 120011211021 - 2¹⁷ = 120011079949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120011210988 and 120011211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120011211011) 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 23 ways as a sum of consecutive naturals, for example, 1051866 + ... + 1160363.

It is an arithmetic number, because the mean of its divisors is an integer number (7287085620).

Almost surely, 2^120011211021 is an apocalyptic number.

It is an amenable number.

120011211021 is a deficient number, since it is larger than the sum of its proper divisors (54878843859).

120011211021 is a wasteful number, since it uses less digits than its factorization.

120011211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212365 (or 2212352 counting only the distinct ones).

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

Adding to 120011211021 its reverse (120112110021), we get a palindrome (240123321042).

The spelling of 120011211021 in words is "one hundred twenty billion, eleven million, two hundred eleven thousand, twenty-one".