120011221212120 has 384 divisors, whose sum is σ = 470836020695040. Its totient is φ = 25928905282560.

The previous prime is 120011221212119. The next prime is 120011221212133. The reversal of 120011221212120 is 21212122110021.

120011221212120 is a `hidden beast` number, since 1 + 200 + 11 + 221 + 21 + 212 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 120011221212093 and 120011221212102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14504119 + ... + 21222438.

It is an arithmetic number, because the mean of its divisors is an integer number (1226135470560).

Almost surely, 2^{120011221212120} is an apocalyptic number.

120011221212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120011221212120 is an abundant number, since it is smaller than the sum of its proper divisors (350824799482920).

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

120011221212120 is a wasteful number, since it uses less digits than its factorization.

120011221212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35726655 (or 35726648 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 120011221212120 its reverse (21212122110021), we get a palindrome (141223343322141).

The spelling of 120011221212120 in words is "one hundred twenty trillion, eleven billion, two hundred twenty-one million, two hundred twelve thousand, one hundred twenty".