1021202021120 has 36 divisors (see below), whose sum is σ = 2446097969280. Its totient is φ = 408480807936.

The previous prime is 1021202021117. The next prime is 1021202021131. The reversal of 1021202021120 is 211202021201.

It is a junction number, because it is equal to n+sod(n) for n = 1021202021095 and 1021202021104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398905760 + ... + 398908319.

Almost surely, 2^{1021202021120} is an apocalyptic number.

1021202021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021202021120 is an abundant number, since it is smaller than the sum of its proper divisors (1424895948160).

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

1021202021120 is an frugal number, since it uses more digits than its factorization.

1021202021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797814100 (or 797814086 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1021202021120 its reverse (211202021201), we get a palindrome (1232404042321).

The spelling of 1021202021120 in words is "one trillion, twenty-one billion, two hundred two million, twenty-one thousand, one hundred twenty".