120111630 has 32 divisors (see below), whose sum is σ = 305226144. Its totient is φ = 30145536.

The previous prime is 120111619. The next prime is 120111631. The reversal of 120111630 is 36111021.

It is a super-2 number, since 2×120111630² = 28853607322513800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120111631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117247 + ... + 118266.

It is an arithmetic number, because the mean of its divisors is an integer number (9538317).

Almost surely, 2^120111630 is an apocalyptic number.

120111630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120111630 is an abundant number, since it is smaller than the sum of its proper divisors (185114514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120111630 is a wasteful number, since it uses less digits than its factorization.

120111630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235540.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 120111630 is about 10959.5451547954. The cubic root of 120111630 is about 493.3953137166.

Adding to 120111630 its reverse (36111021), we get a palindrome (156222651).

It can be divided in two parts, 120 and 111630, that multiplied together give a square (13395600 = 3660²).

The spelling of 120111630 in words is "one hundred twenty million, one hundred eleven thousand, six hundred thirty".