1222002021200 has 60 divisors (see below), whose sum is σ = 2938489273980. Its totient is φ = 488363028480.

The previous prime is 1222002021197. The next prime is 1222002021269. The reversal of 1222002021200 is 21202002221.

It can be written as a sum of positive squares in 6 ways, for example, as 124846328896 + 1097155692304 = 353336^2 + 1047452^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 920705 + ... + 1814304.

It is an arithmetic number, because the mean of its divisors is an integer number (48974821233).

Almost surely, 2^{1222002021200} is an apocalyptic number.

1222002021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222002021200 is an abundant number, since it is smaller than the sum of its proper divisors (1716487252780).

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

1222002021200 is a wasteful number, since it uses less digits than its factorization.

1222002021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2736144 (or 2736133 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1222002021200 its reverse (21202002221), we get a palindrome (1243204023421).

It can be divided in two parts, 1222002021 and 200, that added together give a palindrome (1222002221).

The spelling of 1222002021200 in words is "one trillion, two hundred twenty-two billion, two million, twenty-one thousand, two hundred".