1202022221020 has 96 divisors (see below), whose sum is σ = 2614797662400. Its totient is φ = 463856246784.

The previous prime is 1202022221003. The next prime is 1202022221021. The reversal of 1202022221020 is 201222202021.

It is a junction number, because it is equal to n+sod(n) for n = 1202022220985 and 1202022221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202022221021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42446626 + ... + 42474934.

It is an arithmetic number, because the mean of its divisors is an integer number (27237475650).

Almost surely, 2^{1202022221020} is an apocalyptic number.

1202022221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1202022221020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1307398831200).

1202022221020 is an abundant number, since it is smaller than the sum of its proper divisors (1412775441380).

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

1202022221020 is a wasteful number, since it uses less digits than its factorization.

1202022221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28967 (or 28965 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 1202022221020 its reverse (201222202021), we get a palindrome (1403244423041).

The spelling of 1202022221020 in words is "one trillion, two hundred two billion, twenty-two million, two hundred twenty-one thousand, twenty".