120201561100 has 18 divisors (see below), whose sum is σ = 260837387804. Its totient is φ = 48080624400.

The previous prime is 120201561097. The next prime is 120201561121. The reversal of 120201561100 is 1165102021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 601007706 + ... + 601007905.

Almost surely, 2^120201561100 is an apocalyptic number.

120201561100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120201561100 is an abundant number, since it is smaller than the sum of its proper divisors (140635826704).

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

120201561100 is a wasteful number, since it uses less digits than its factorization.

120201561100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202015625 (or 1202015618 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 120201561100 its reverse (1165102021), we get a palindrome (121366663121).

The spelling of 120201561100 in words is "one hundred twenty billion, two hundred one million, five hundred sixty-one thousand, one hundred".