2231221211020 has 12 divisors (see below), whose sum is σ = 4685564543184. Its totient is φ = 892488484400.

The previous prime is 2231221210997. The next prime is 2231221211041. The reversal of 2231221211020 is 201121221322.

It is a super-3 number, since 3×2231221211020³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55780530256 + ... + 55780530295.

It is an arithmetic number, because the mean of its divisors is an integer number (390463711932).

Almost surely, 2^{2231221211020} is an apocalyptic number.

2231221211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231221211020 is an abundant number, since it is smaller than the sum of its proper divisors (2454343332164).

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

2231221211020 is a wasteful number, since it uses less digits than its factorization.

2231221211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111561060560 (or 111561060558 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2231221211020 its reverse (201121221322), we get a palindrome (2432342432342).

The spelling of 2231221211020 in words is "two trillion, two hundred thirty-one billion, two hundred twenty-one million, two hundred eleven thousand, twenty".