2231121103020 has 72 divisors (see below), whose sum is σ = 6827625526176. Its totient is φ = 589700439552.

The previous prime is 2231121102979. The next prime is 2231121103067. The reversal of 2231121103020 is 203011211322.

2231121103020 is a `hidden beast` number, since 2 + 231 + 121 + 10 + 302 + 0 = 666.

It is a super-3 number, since 3×2231121103020³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2231121102984 and 2231121103002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54825312 + ... + 54865991.

It is an arithmetic number, because the mean of its divisors is an integer number (94828132308).

Almost surely, 2^{2231121103020} is an apocalyptic number.

2231121103020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231121103020 is an abundant number, since it is smaller than the sum of its proper divisors (4596504423156).

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

2231121103020 is a wasteful number, since it uses less digits than its factorization.

2231121103020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109691431 (or 109691426 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2231121103020 its reverse (203011211322), we get a palindrome (2434132314342).

The spelling of 2231121103020 in words is "two trillion, two hundred thirty-one billion, one hundred twenty-one million, one hundred three thousand, twenty".