2302211331220 has 24 divisors (see below), whose sum is σ = 4861354542408. Its totient is φ = 915796771200.

The previous prime is 2302211331047. The next prime is 2302211331229. The reversal of 2302211331220 is 221331122032.

It can be written as a sum of positive squares in 4 ways, for example, as 171352946704 + 2130858384516 = 413948^2 + 1459746^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2302211331191 and 2302211331200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2302211331229) 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, 317981371 + ... + 317988610.

It is an arithmetic number, because the mean of its divisors is an integer number (202556439267).

Almost surely, 2^{2302211331220} is an apocalyptic number.

2302211331220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2302211331220 is an abundant number, since it is smaller than the sum of its proper divisors (2559143211188).

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

2302211331220 is a wasteful number, since it uses less digits than its factorization.

2302211331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635970171 (or 635970169 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2302211331220 its reverse (221331122032), we get a palindrome (2523542453252).

The spelling of 2302211331220 in words is "two trillion, three hundred two billion, two hundred eleven million, three hundred thirty-one thousand, two hundred twenty".