1001122020220 has 24 divisors (see below), whose sum is σ = 2402692848864. Its totient is φ = 343241835456.

The previous prime is 1001122020203. The next prime is 1001122020281. The reversal of 1001122020220 is 220202211001.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001122020220.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3575435647 + ... + 3575435926.

It is an arithmetic number, because the mean of its divisors is an integer number (100112202036).

Almost surely, 2^{1001122020220} is an apocalyptic number.

1001122020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001122020220 is an abundant number, since it is smaller than the sum of its proper divisors (1401570828644).

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

1001122020220 is a wasteful number, since it uses less digits than its factorization.

1001122020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7150871589 (or 7150871587 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1001122020220 its reverse (220202211001), we get a palindrome (1221324231221).

The spelling of 1001122020220 in words is "one trillion, one billion, one hundred twenty-two million, twenty thousand, two hundred twenty".