2221202132220 has 384 divisors, whose sum is σ = 6892850764800. Its totient is φ = 532287479808.

The previous prime is 2221202132213. The next prime is 2221202132251. The reversal of 2221202132220 is 222312021222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1554374466 + ... + 1554375894.

It is an arithmetic number, because the mean of its divisors is an integer number (17950132200).

Almost surely, 2^{2221202132220} is an apocalyptic number.

2221202132220 is a gapful number since it is divisible by the number (20) 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 2221202132220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3446425382400).

2221202132220 is an abundant number, since it is smaller than the sum of its proper divisors (4671648632580).

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

2221202132220 is a wasteful number, since it uses less digits than its factorization.

2221202132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397 (or 2395 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 2221202132220 its reverse (222312021222), we get a palindrome (2443514153442).

The spelling of 2221202132220 in words is "two trillion, two hundred twenty-one billion, two hundred two million, one hundred thirty-two thousand, two hundred twenty".