20121002102200 has 96 divisors (see below), whose sum is σ = 46858636480320. Its totient is φ = 8035110720000.

The previous prime is 20121002102183. The next prime is 20121002102203. The reversal of 20121002102200 is 220120012102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121002102203) 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, 339044530 + ... + 339103870.

It is an arithmetic number, because the mean of its divisors is an integer number (488110796670).

Almost surely, 2^{20121002102200} is an apocalyptic number.

20121002102200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121002102200 is an abundant number, since it is smaller than the sum of its proper divisors (26737634378120).

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

20121002102200 is a wasteful number, since it uses less digits than its factorization.

20121002102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62129 (or 62120 counting only the distinct ones).

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

Adding to 20121002102200 its reverse (220120012102), we get a palindrome (20341122114302).

The spelling of 20121002102200 in words is "twenty trillion, one hundred twenty-one billion, two million, one hundred two thousand, two hundred".