1001122322220 has 72 divisors (see below), whose sum is σ = 3118811723664. Its totient is φ = 259750654848.

The previous prime is 1001122322219. The next prime is 1001122322231. The reversal of 1001122322220 is 222232211001.

1001122322220 is a `hidden beast` number, since 1 + 0 + 0 + 1 + 122 + 322 + 220 = 666.

1001122322220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1001122322193 and 1001122322202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75152674 + ... + 75165993.

Almost surely, 2^{1001122322220} is an apocalyptic number.

1001122322220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001122322220 is an abundant number, since it is smaller than the sum of its proper divisors (2117689401444).

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

1001122322220 is a wasteful number, since it uses less digits than its factorization.

1001122322220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150318719 (or 150318714 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1001122322220 its reverse (222232211001), we get a palindrome (1223354533221).

It can be divided in two parts, 1001 and 122322220, that added together give a palindrome (122323221).

The spelling of 1001122322220 in words is "one trillion, one billion, one hundred twenty-two million, three hundred twenty-two thousand, two hundred twenty".