1100021001212 has 36 divisors (see below), whose sum is σ = 2239395815160. Its totient is φ = 471423393504.

The previous prime is 1100021001199. The next prime is 1100021001217. The reversal of 1100021001212 is 2121001200011.

It is a junction number, because it is equal to n+sod(n) for n = 1100021001193 and 1100021001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100021001217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8862839 + ... + 8986097.

It is an arithmetic number, because the mean of its divisors is an integer number (62205439310).

Almost surely, 2^{1100021001212} is an apocalyptic number.

It is an amenable number.

1100021001212 is an abundant number, since it is smaller than the sum of its proper divisors (1139374813948).

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

1100021001212 is a wasteful number, since it uses less digits than its factorization.

1100021001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168810 (or 168801 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1100021001212 its reverse (2121001200011), we get a palindrome (3221022201223).

The spelling of 1100021001212 in words is "one trillion, one hundred billion, twenty-one million, one thousand, two hundred twelve".