1001212223223 has 16 divisors (see below), whose sum is σ = 1337430648960. Its totient is φ = 666234660576.

The previous prime is 1001212223197. The next prime is 1001212223321. The reversal of 1001212223223 is 3223222121001.

It is not a de Polignac number, because 1001212223223 - 2⁵ = 1001212223191 is a prime.

It is a super-2 number, since 2×1001212223223² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1001212223223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001212221223) 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, 12334093 + ... + 12415001.

It is an arithmetic number, because the mean of its divisors is an integer number (83589415560).

Almost surely, 2^{1001212223223} is an apocalyptic number.

1001212223223 is a deficient number, since it is larger than the sum of its proper divisors (336218425737).

1001212223223 is an equidigital number, since it uses as much as digits as its factorization.

1001212223223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88526.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1001212223223 its reverse (3223222121001), we get a palindrome (4224434344224).

The spelling of 1001212223223 in words is "one trillion, one billion, two hundred twelve million, two hundred twenty-three thousand, two hundred twenty-three".