1022021220120 has 64 divisors (see below), whose sum is σ = 3066136161120. Its totient is φ = 272532547584.

The previous prime is 1022021220113. The next prime is 1022021220149. The reversal of 1022021220120 is 210221202201.

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 1022021220120.

It is a congruent number.

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, 7179072 + ... + 7320048.

Almost surely, 2^{1022021220120} is an apocalyptic number.

1022021220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022021220120 is an abundant number, since it is smaller than the sum of its proper divisors (2044114941000).

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

1022021220120 is a wasteful number, since it uses less digits than its factorization.

1022021220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201404 (or 201400 counting only the distinct ones).

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

Adding to 1022021220120 its reverse (210221202201), we get a palindrome (1232242422321).

The spelling of 1022021220120 in words is "one trillion, twenty-two billion, twenty-one million, two hundred twenty thousand, one hundred twenty".