221202221021120 has 28 divisors (see below), whose sum is σ = 526737788807304. Its totient is φ = 88480888408320.

The previous prime is 221202221021101. The next prime is 221202221021219. The reversal of 221202221021120 is 21120122202122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 221202221021092 and 221202221021101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345628470026 + ... + 345628470665.

Almost surely, 2^{221202221021120} is an apocalyptic number.

221202221021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221202221021120 is an abundant number, since it is smaller than the sum of its proper divisors (305535567786184).

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

221202221021120 is an equidigital number, since it uses as much as digits as its factorization.

221202221021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691256940708 (or 691256940698 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221202221021120 its reverse (21120122202122), we get a palindrome (242322343223242).

The spelling of 221202221021120 in words is "two hundred twenty-one trillion, two hundred two billion, two hundred twenty-one million, twenty-one thousand, one hundred twenty".