1202021220020 has 24 divisors (see below), whose sum is σ = 2524265499168. Its totient is φ = 480804500000.

The previous prime is 1202021220017. The next prime is 1202021220061. The reversal of 1202021220020 is 200221202021.

It is a junction number, because it is equal to n+sod(n) for n = 1202021219977 and 1202021220004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3937895 + ... + 4232145.

It is an arithmetic number, because the mean of its divisors is an integer number (105177729132).

Almost surely, 2^{1202021220020} is an apocalyptic number.

1202021220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202021220020 is an abundant number, since it is smaller than the sum of its proper divisors (1322244279148).

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

1202021220020 is a wasteful number, since it uses less digits than its factorization.

1202021220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498511 (or 498509 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1202021220020 its reverse (200221202021), we get a palindrome (1402242422041).

The spelling of 1202021220020 in words is "one trillion, two hundred two billion, twenty-one million, two hundred twenty thousand, twenty".