1020121222200 has 96 divisors (see below), whose sum is σ = 3264387970560. Its totient is φ = 263257084800.

The previous prime is 1020121222193. The next prime is 1020121222229. The reversal of 1020121222200 is 22221210201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1020121222200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27404014 + ... + 27441213.

It is an arithmetic number, because the mean of its divisors is an integer number (34004041360).

Almost surely, 2^{1020121222200} is an apocalyptic number.

1020121222200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020121222200 is an abundant number, since it is smaller than the sum of its proper divisors (2244266748360).

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

1020121222200 is a wasteful number, since it uses less digits than its factorization.

1020121222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54845277 (or 54845268 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1020121222200 its reverse (22221210201), we get a palindrome (1042342432401).

The spelling of 1020121222200 in words is "one trillion, twenty billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred".