10011100212 has 144 divisors (see below), whose sum is σ = 26732497792. Its totient is φ = 3154878720.

The previous prime is 10011100189. The next prime is 10011100219. The reversal of 10011100212 is 21200111001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10011100194 and 10011100203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011100219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15865137 + ... + 15865767.

Almost surely, 2^10011100212 is an apocalyptic number.

10011100212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10011100212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13366248896).

10011100212 is an abundant number, since it is smaller than the sum of its proper divisors (16721397580).

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

10011100212 is a wasteful number, since it uses less digits than its factorization.

10011100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10011100212 its reverse (21200111001), we get a palindrome (31211211213).

The spelling of 10011100212 in words is "ten billion, eleven million, one hundred thousand, two hundred twelve".