120220111111111 has 32 divisors (see below), whose sum is σ = 137352581922816. Its totient is φ = 104156642700000.

The previous prime is 120220111111091. The next prime is 120220111111117. The reversal of 120220111111111 is 111111111022021.

It is not a de Polignac number, because 120220111111111 - 2²¹ = 120220109013959 is a prime.

It is a Duffinian number.

120220111111111 is a modest number, since divided by 11111111 gives 1202201 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120220111111117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176776050 + ... + 177454816.

It is an arithmetic number, because the mean of its divisors is an integer number (4292268185088).

Almost surely, 2^{120220111111111} is an apocalyptic number.

120220111111111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120220111111111 is a deficient number, since it is larger than the sum of its proper divisors (17132470811705).

120220111111111 is a wasteful number, since it uses less digits than its factorization.

120220111111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681363.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 120220111111111 its reverse (111111111022021), we get a palindrome (231331222133132).

The spelling of 120220111111111 in words is "one hundred twenty trillion, two hundred twenty billion, one hundred eleven million, one hundred eleven thousand, one hundred eleven".