1220102120200 has 24 divisors (see below), whose sum is σ = 2836737429930. Its totient is φ = 488040848000.

The previous prime is 1220102120189. The next prime is 1220102120207. The reversal of 1220102120200 is 20212010221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1191376616004 + 28725504196 = 1091502^2 + 169486^2 .

It is not an unprimeable number, because it can be changed into a prime (1220102120207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3050255101 + ... + 3050255500.

Almost surely, 2^{1220102120200} is an apocalyptic number.

1220102120200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220102120200 is an abundant number, since it is smaller than the sum of its proper divisors (1616635309730).

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

1220102120200 is a wasteful number, since it uses less digits than its factorization.

1220102120200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6100510617 (or 6100510608 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1220102120200 its reverse (20212010221), we get a palindrome (1240314130421).

The spelling of 1220102120200 in words is "one trillion, two hundred twenty billion, one hundred two million, one hundred twenty thousand, two hundred".