22031001313220 has 24 divisors (see below), whose sum is σ = 46287249855000. Its totient is φ = 8808182030592.

The previous prime is 22031001313213. The next prime is 22031001313231. The reversal of 22031001313220 is 2231310013022.

It can be written as a sum of positive squares in 4 ways, for example, as 8373187173316 + 13657814139904 = 2893646^2 + 3695648^2 .

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 = 22031001313192 and 22031001313201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263613095 + ... + 263696654.

It is an arithmetic number, because the mean of its divisors is an integer number (1928635410625).

Almost surely, 2^{22031001313220} is an apocalyptic number.

22031001313220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22031001313220 is an abundant number, since it is smaller than the sum of its proper divisors (24256248541780).

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

22031001313220 is a wasteful number, since it uses less digits than its factorization.

22031001313220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527311847 (or 527311845 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 22031001313220 its reverse (2231310013022), we get a palindrome (24262311326242).

The spelling of 22031001313220 in words is "twenty-two trillion, thirty-one billion, one million, three hundred thirteen thousand, two hundred twenty".