1202021220220 has 48 divisors (see below), whose sum is σ = 2531055814560. Its totient is φ = 479511546624.

The previous prime is 1202021220151. The next prime is 1202021220229. The reversal of 1202021220220 is 220221202021.

It is a junction number, because it is equal to n+sod(n) for n = 1202021220194 and 1202021220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202021220229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62533771 + ... + 62552989.

It is an arithmetic number, because the mean of its divisors is an integer number (52730329470).

Almost surely, 2^{1202021220220} is an apocalyptic number.

1202021220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202021220220 is an abundant number, since it is smaller than the sum of its proper divisors (1329034594340).

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

1202021220220 is a wasteful number, since it uses less digits than its factorization.

1202021220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27502 (or 27500 counting only the distinct ones).

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

Adding to 1202021220220 its reverse (220221202021), we get a palindrome (1422242422241).

It can be divided in two parts, 1202021 and 220220, that added together give a palindrome (1422241).

The spelling of 1202021220220 in words is "one trillion, two hundred two billion, twenty-one million, two hundred twenty thousand, two hundred twenty".