1201022220020 has 24 divisors (see below), whose sum is σ = 2882453328384. Its totient is φ = 411779046816.

The previous prime is 1201022219927. The next prime is 1201022220031. The reversal of 1201022220020 is 200222201021.

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 = 1201022219977 and 1201022220004.

It is a congruent number.

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, 4289364932 + ... + 4289365211.

It is an arithmetic number, because the mean of its divisors is an integer number (120102222016).

Almost surely, 2^{1201022220020} is an apocalyptic number.

1201022220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201022220020 is an abundant number, since it is smaller than the sum of its proper divisors (1681431108364).

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

1201022220020 is a wasteful number, since it uses less digits than its factorization.

1201022220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8578730159 (or 8578730157 counting only the distinct ones).

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

Adding to 1201022220020 its reverse (200222201021), we get a palindrome (1401244421041).

The spelling of 1201022220020 in words is "one trillion, two hundred one billion, twenty-two million, two hundred twenty thousand, twenty".