10021212223 has 16 divisors (see below), whose sum is σ = 11143785600. Its totient is φ = 8935588000.

The previous prime is 10021212211. The next prime is 10021212259. The reversal of 10021212223 is 32221212001.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10021212223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021212197 and 10021212206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021212293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76728 + ... + 161026.

It is an arithmetic number, because the mean of its divisors is an integer number (696486600).

Almost surely, 2^10021212223 is an apocalyptic number.

10021212223 is a deficient number, since it is larger than the sum of its proper divisors (1122573377).

10021212223 is a wasteful number, since it uses less digits than its factorization.

10021212223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84518.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 10021212223 its reverse (32221212001), we get a palindrome (42242424224).

The spelling of 10021212223 in words is "ten billion, twenty-one million, two hundred twelve thousand, two hundred twenty-three".