1220201332200 has 72 divisors (see below), whose sum is σ = 4097842813350. Its totient is φ = 325387021440.

The previous prime is 1220201332183. The next prime is 1220201332211. The reversal of 1220201332200 is 22331020221.

It can be written as a sum of positive squares in 3 ways, for example, as 940903880004 + 279297452196 = 970002^2 + 528486^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1220201332200² (a number of 25 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 338943015 + ... + 338946614.

Almost surely, 2^{1220201332200} is an apocalyptic number.

1220201332200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220201332200 is an abundant number, since it is smaller than the sum of its proper divisors (2877641481150).

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

1220201332200 is a wasteful number, since it uses less digits than its factorization.

1220201332200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677889651 (or 677889639 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 1220201332200 its reverse (22331020221), we get a palindrome (1242532352421).

The spelling of 1220201332200 in words is "one trillion, two hundred twenty billion, two hundred one million, three hundred thirty-two thousand, two hundred".