1001111202220 has 48 divisors (see below), whose sum is σ = 2122258084128. Its totient is φ = 396650304000.

The previous prime is 1001111202211. The next prime is 1001111202229. The reversal of 1001111202220 is 222021111001.

It is an interprime number because it is at equal distance from previous prime (1001111202211) and next prime (1001111202229).

It is a self number, because there is not a number n which added to its sum of digits gives 1001111202220.

It is not an unprimeable number, because it can be changed into a prime (1001111202229) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19236154 + ... + 19288126.

It is an arithmetic number, because the mean of its divisors is an integer number (44213710086).

Almost surely, 2^{1001111202220} is an apocalyptic number.

1001111202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001111202220 is an abundant number, since it is smaller than the sum of its proper divisors (1121146881908).

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

1001111202220 is a wasteful number, since it uses less digits than its factorization.

1001111202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61090 (or 61088 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1001111202220 its reverse (222021111001), we get a palindrome (1223132313221).

The spelling of 1001111202220 in words is "one trillion, one billion, one hundred eleven million, two hundred two thousand, two hundred twenty".