1022221211020 has 12 divisors (see below), whose sum is σ = 2146664543184. Its totient is φ = 408888484400.

The previous prime is 1022221211009. The next prime is 1022221211023. The reversal of 1022221211020 is 201121222201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1022221210985 and 1022221211003.

It is not an unprimeable number, because it can be changed into a prime (1022221211023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25555530256 + ... + 25555530295.

It is an arithmetic number, because the mean of its divisors is an integer number (178888711932).

Almost surely, 2^{1022221211020} is an apocalyptic number.

1022221211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022221211020 is an abundant number, since it is smaller than the sum of its proper divisors (1124443332164).

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

1022221211020 is a wasteful number, since it uses less digits than its factorization.

1022221211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51111060560 (or 51111060558 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1022221211020 its reverse (201121222201), we get a palindrome (1223342433221).

The spelling of 1022221211020 in words is "one trillion, twenty-two billion, two hundred twenty-one million, two hundred eleven thousand, twenty".