1012211220020 has 96 divisors (see below), whose sum is σ = 2854010992896. Its totient is φ = 291225600000.

The previous prime is 1012211220001. The next prime is 1012211220073. The reversal of 1012211220020 is 200221122101.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1012211219977 and 1012211220004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25259981 + ... + 25300020.

It is an arithmetic number, because the mean of its divisors is an integer number (29729281176).

Almost surely, 2^{1012211220020} is an apocalyptic number.

1012211220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012211220020 is an abundant number, since it is smaller than the sum of its proper divisors (1841799772876).

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

1012211220020 is a wasteful number, since it uses less digits than its factorization.

1012211220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50560041 (or 50560039 counting only the distinct ones).

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

Adding to 1012211220020 its reverse (200221122101), we get a palindrome (1212432342121).

The spelling of 1012211220020 in words is "one trillion, twelve billion, two hundred eleven million, two hundred twenty thousand, twenty".