1002122011220 has 24 divisors (see below), whose sum is σ = 2295770426208. Its totient is φ = 364408004000.

The previous prime is 1002122011169. The next prime is 1002122011229. The reversal of 1002122011220 is 221102212001.

It is a junction number, because it is equal to n+sod(n) for n = 1002122011195 and 1002122011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002122011229) 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, 2277549806 + ... + 2277550245.

It is an arithmetic number, because the mean of its divisors is an integer number (95657101092).

Almost surely, 2^{1002122011220} is an apocalyptic number.

1002122011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002122011220 is an abundant number, since it is smaller than the sum of its proper divisors (1293648414988).

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

1002122011220 is a wasteful number, since it uses less digits than its factorization.

1002122011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4555100071 (or 4555100069 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1002122011220 its reverse (221102212001), we get a palindrome (1223224223221).

The spelling of 1002122011220 in words is "one trillion, two billion, one hundred twenty-two million, eleven thousand, two hundred twenty".