10100011212 has 72 divisors (see below), whose sum is σ = 26612187056. Its totient is φ = 3226760064.

The previous prime is 10100011157. The next prime is 10100011223. The reversal of 10100011212 is 21211000101.

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 = 10100011194 and 10100011203.

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, 32658 + ... + 145830.

Almost surely, 2^10100011212 is an apocalyptic number.

10100011212 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 10100011212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13306093528).

10100011212 is an abundant number, since it is smaller than the sum of its proper divisors (16512175844).

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

10100011212 is a wasteful number, since it uses less digits than its factorization.

10100011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113287 (or 113282 counting only the distinct ones).

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

Adding to 10100011212 its reverse (21211000101), we get a palindrome (31311011313).

The spelling of 10100011212 in words is "ten billion, one hundred million, eleven thousand, two hundred twelve".