1001122211020 has 24 divisors (see below), whose sum is σ = 2102387593824. Its totient is φ = 400442989056.

The previous prime is 1001122211003. The next prime is 1001122211027. The reversal of 1001122211020 is 201122211001.

It is not an unprimeable number, because it can be changed into a prime (1001122211027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1183452 + ... + 1844668.

It is an arithmetic number, because the mean of its divisors is an integer number (87599483076).

Almost surely, 2^{1001122211020} is an apocalyptic number.

1001122211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001122211020 is an abundant number, since it is smaller than the sum of its proper divisors (1101265382804).

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

1001122211020 is a wasteful number, since it uses less digits than its factorization.

1001122211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736929 (or 736927 counting only the distinct ones).

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

Adding to 1001122211020 its reverse (201122211001), we get a palindrome (1202244422021).

It can be divided in two parts, 100112 and 2211020, that added together give a palindrome (2311132).

The spelling of 1001122211020 in words is "one trillion, one billion, one hundred twenty-two million, two hundred eleven thousand, twenty".