2211421023 has 24 divisors (see below), whose sum is σ = 3652832768. Its totient is φ = 1262896272.

The previous prime is 2211420989. The next prime is 2211421031. The reversal of 2211421023 is 3201241122.

It is a happy number.

2211421023 is a `hidden beast` number, since 221 + 1 + 421 + 0 + 23 = 666.

It is not a de Polignac number, because 2211421023 - 2¹² = 2211416927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2211420987 and 2211421005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211421033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102486 + ... + 122172.

Almost surely, 2^2211421023 is an apocalyptic number.

2211421023 is a deficient number, since it is larger than the sum of its proper divisors (1441411745).

2211421023 is a wasteful number, since it uses less digits than its factorization.

2211421023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21483 (or 21480 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2211421023 is about 47025.7485107893. The cubic root of 2211421023 is about 1302.8381823568.

Adding to 2211421023 its reverse (3201241122), we get a palindrome (5412662145).

The spelling of 2211421023 in words is "two billion, two hundred eleven million, four hundred twenty-one thousand, twenty-three".