11100021212 has 24 divisors (see below), whose sum is σ = 22407525504. Its totient is φ = 4712691312.

The previous prime is 11100021203. The next prime is 11100021223. The reversal of 11100021212 is 21212000111.

It is a junction number, because it is equal to n+sod(n) for n = 11100021193 and 11100021202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1849478 + ... + 1855469.

It is an arithmetic number, because the mean of its divisors is an integer number (933646896).

Almost surely, 2^11100021212 is an apocalyptic number.

It is an amenable number.

11100021212 is an abundant number, since it is smaller than the sum of its proper divisors (11307504292).

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

11100021212 is a wasteful number, since it uses less digits than its factorization.

11100021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3705065 (or 3705063 counting only the distinct ones).

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

Adding to 11100021212 its reverse (21212000111), we get a palindrome (32312021323).

The spelling of 11100021212 in words is "eleven billion, one hundred million, twenty-one thousand, two hundred twelve".