1002122020120 has 64 divisors (see below), whose sum is σ = 2431427382720. Its totient is φ = 369525348864.

The previous prime is 1002122020073. The next prime is 1002122020153. The reversal of 1002122020120 is 210202212001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1002122020120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 879252 + ... + 1666531.

It is an arithmetic number, because the mean of its divisors is an integer number (37991052855).

Almost surely, 2^{1002122020120} is an apocalyptic number.

1002122020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002122020120 is an abundant number, since it is smaller than the sum of its proper divisors (1429305362600).

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

1002122020120 is a wasteful number, since it uses less digits than its factorization.

1002122020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546564 (or 2546560 counting only the distinct ones).

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

Adding to 1002122020120 its reverse (210202212001), we get a palindrome (1212324232121).

The spelling of 1002122020120 in words is "one trillion, two billion, one hundred twenty-two million, twenty thousand, one hundred twenty".