1011202000020 has 72 divisors (see below), whose sum is σ = 3067396908576. Its totient is φ = 269646466752.

The previous prime is 1011201999989. The next prime is 1011202000033. The reversal of 1011202000020 is 200002021101.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1011201999966 and 1011202000011.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 10587399 + ... + 10682481.

Almost surely, 2^{1011202000020} is an apocalyptic number.

1011202000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011202000020 is an abundant number, since it is smaller than the sum of its proper divisors (2056194908556).

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

1011202000020 is a wasteful number, since it uses less digits than its factorization.

1011202000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154181 (or 154176 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1011202000020 its reverse (200002021101), we get a palindrome (1211204021121).

The spelling of 1011202000020 in words is "one trillion, eleven billion, two hundred two million, twenty", and thus it is an aban number.