1012221110020 has 24 divisors (see below), whose sum is σ = 2125695499200. Its totient is φ = 404882507232.

The previous prime is 1012221109993. The next prime is 1012221110053. The reversal of 1012221110020 is 200111222101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1186521 + ... + 1852639.

It is an arithmetic number, because the mean of its divisors is an integer number (88570645800).

Almost surely, 2^{1012221110020} is an apocalyptic number.

1012221110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012221110020 is an abundant number, since it is smaller than the sum of its proper divisors (1113474389180).

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

1012221110020 is a wasteful number, since it uses less digits than its factorization.

1012221110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742107 (or 742105 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1012221110020 its reverse (200111222101), we get a palindrome (1212332332121).

The spelling of 1012221110020 in words is "one trillion, twelve billion, two hundred twenty-one million, one hundred ten thousand, twenty".