1021101212223 has 12 divisors (see below), whose sum is σ = 1475830524168. Its totient is φ = 680315733360.

The previous prime is 1021101212191. The next prime is 1021101212227. The reversal of 1021101212223 is 3222121011201.

It is not a de Polignac number, because 1021101212223 - 2⁵ = 1021101212191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021101212196 and 1021101212205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021101212227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34851888 + ... + 34881173.

It is an arithmetic number, because the mean of its divisors is an integer number (122985877014).

Almost surely, 2^{1021101212223} is an apocalyptic number.

1021101212223 is a deficient number, since it is larger than the sum of its proper divisors (454729311945).

1021101212223 is a wasteful number, since it uses less digits than its factorization.

1021101212223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69734694 (or 69734691 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1021101212223 its reverse (3222121011201), we get a palindrome (4243222223424).

The spelling of 1021101212223 in words is "one trillion, twenty-one billion, one hundred one million, two hundred twelve thousand, two hundred twenty-three".