1220021102200 has 24 divisors (see below), whose sum is σ = 2836549063080. Its totient is φ = 488008440800.

The previous prime is 1220021102197. The next prime is 1220021102203. The reversal of 1220021102200 is 22011200221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1220021102197) and next prime (1220021102203).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220021102203) 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, 3050052556 + ... + 3050052955.

It is an arithmetic number, because the mean of its divisors is an integer number (118189544295).

Almost surely, 2^{1220021102200} is an apocalyptic number.

1220021102200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220021102200 is an abundant number, since it is smaller than the sum of its proper divisors (1616527960880).

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

1220021102200 is a wasteful number, since it uses less digits than its factorization.

1220021102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6100105527 (or 6100105518 counting only the distinct ones).

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

Adding to 1220021102200 its reverse (22011200221), we get a palindrome (1242032302421).

The spelling of 1220021102200 in words is "one trillion, two hundred twenty billion, twenty-one million, one hundred two thousand, two hundred".