120020000111021 has 2 divisors, whose sum is σ = 120020000111022. Its totient is φ = 120020000111020.

The previous prime is 120020000110987. The next prime is 120020000111059. The reversal of 120020000111021 is 120111000020021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118633703448100 + 1386296662921 = 10891910^2 + 1177411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120020000111021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120020000110993 and 120020000111011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120020000111621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010000055510 + 60010000055511.

It is an arithmetic number, because the mean of its divisors is an integer number (60010000055511).

Almost surely, 2^{120020000111021} is an apocalyptic number.

It is an amenable number.

120020000111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120020000111021 is an equidigital number, since it uses as much as digits as its factorization.

120020000111021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 120020000111021 its reverse (120111000020021), we get a palindrome (240131000131042).

It can be divided in two parts, 120020000 and 111021, that added together give a palindrome (120131021).

The spelling of 120020000111021 in words is "one hundred twenty trillion, twenty billion, one hundred eleven thousand, twenty-one".