201220121001200 has 120 divisors (see below), whose sum is σ = 570315314626560. Its totient is φ = 66764279750400.

The previous prime is 201220121001181. The next prime is 201220121001209. The reversal of 201220121001200 is 2100121022102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201220121001209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1159015280 + ... + 1159188879.

It is an arithmetic number, because the mean of its divisors is an integer number (4752627621888).

Almost surely, 2^{201220121001200} is an apocalyptic number.

201220121001200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201220121001200 is an abundant number, since it is smaller than the sum of its proper divisors (369095193625360).

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

201220121001200 is a wasteful number, since it uses less digits than its factorization.

201220121001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318204215 (or 2318204204 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201220121001200 its reverse (2100121022102), we get a palindrome (203320242023302).

The spelling of 201220121001200 in words is "two hundred one trillion, two hundred twenty billion, one hundred twenty-one million, one thousand, two hundred".