1202221100020 has 24 divisors (see below), whose sum is σ = 2525008999968. Its totient is φ = 480822784800.

The previous prime is 1202221100009. The next prime is 1202221100021. The reversal of 1202221100020 is 200011222021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202221100021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3953166 + ... + 4246405.

It is an arithmetic number, because the mean of its divisors is an integer number (105208708332).

Almost surely, 2^{1202221100020} is an apocalyptic number.

1202221100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202221100020 is an abundant number, since it is smaller than the sum of its proper divisors (1322787899948).

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

1202221100020 is a wasteful number, since it uses less digits than its factorization.

1202221100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8206911 (or 8206909 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1202221100020 its reverse (200011222021), we get a palindrome (1402232322041).

The spelling of 1202221100020 in words is "one trillion, two hundred two billion, two hundred twenty-one million, one hundred thousand, twenty".