1021102122120 has 64 divisors (see below), whose sum is σ = 3196493608320. Its totient is φ = 260455033344.

The previous prime is 1021102122083. The next prime is 1021102122179. The reversal of 1021102122120 is 212212011201.

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 1021102122120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184979509 + ... + 184985028.

It is an arithmetic number, because the mean of its divisors is an integer number (49945212630).

Almost surely, 2^{1021102122120} is an apocalyptic number.

1021102122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021102122120 is an abundant number, since it is smaller than the sum of its proper divisors (2175391486200).

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

1021102122120 is a wasteful number, since it uses less digits than its factorization.

1021102122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369964574 (or 369964570 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1021102122120 its reverse (212212011201), we get a palindrome (1233314133321).

The spelling of 1021102122120 in words is "one trillion, twenty-one billion, one hundred two million, one hundred twenty-two thousand, one hundred twenty".