2021011223 has 32 divisors (see below), whose sum is σ = 2631129600. Its totient is φ = 1538066880.

The previous prime is 2021011217. The next prime is 2021011229. The reversal of 2021011223 is 3221101202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2021011217) and next prime (2021011229).

It is not a de Polignac number, because 2021011223 - 2¹² = 2021007127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021011198 and 2021011207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021011229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156011 + ... + 168467.

It is an arithmetic number, because the mean of its divisors is an integer number (82222800).

Almost surely, 2^2021011223 is an apocalyptic number.

2021011223 is a deficient number, since it is larger than the sum of its proper divisors (610118377).

2021011223 is a wasteful number, since it uses less digits than its factorization.

2021011223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12532 (or 12518 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2021011223 is about 44955.6584091480. The cubic root of 2021011223 is about 1264.3177692673.

Adding to 2021011223 its reverse (3221101202), we get a palindrome (5242112425).

The spelling of 2021011223 in words is "two billion, twenty-one million, eleven thousand, two hundred twenty-three".