120221201022100 has 36 divisors (see below), whose sum is σ = 261118688986204. Its totient is φ = 48044483585280.

The previous prime is 120221201022061. The next prime is 120221201022101. The reversal of 120221201022100 is 1220102122021.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 32561311887504 + 87659889134596 = 5706252^2 + 9362686^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120221201022101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 549850449 + ... + 550069048.

Almost surely, 2^{120221201022100} is an apocalyptic number.

120221201022100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120221201022100 is an abundant number, since it is smaller than the sum of its proper divisors (140897487964104).

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

120221201022100 is a wasteful number, since it uses less digits than its factorization.

120221201022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099920604 (or 1099920597 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 120221201022100 its reverse (1220102122021), we get a palindrome (121441303144121).

The spelling of 120221201022100 in words is "one hundred twenty trillion, two hundred twenty-one billion, two hundred one million, twenty-two thousand, one hundred".