10111021223212 has 144 divisors (see below), whose sum is σ = 23365492469760. Its totient is φ = 3737527432704.

The previous prime is 10111021223159. The next prime is 10111021223213. The reversal of 10111021223212 is 21232212011101.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 10111021223212.

It is not an unprimeable number, because it can be changed into a prime (10111021223213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5793013 + ... + 7333555.

Almost surely, 2^{10111021223212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10111021223212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11682746234880).

10111021223212 is an abundant number, since it is smaller than the sum of its proper divisors (13254471246548).

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

10111021223212 is a wasteful number, since it uses less digits than its factorization.

10111021223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540672 (or 1540657 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 10111021223212 its reverse (21232212011101), we get a palindrome (31343233234313).

The spelling of 10111021223212 in words is "ten trillion, one hundred eleven billion, twenty-one million, two hundred twenty-three thousand, two hundred twelve".