20230221111 has 4 divisors (see below), whose sum is σ = 26973628152. Its totient is φ = 13486814072.

The previous prime is 20230221097. The next prime is 20230221161. The reversal of 20230221111 is 11112203202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20230221111 - 2¹¹ = 20230219063 is a prime.

It is a super-4 number, since 4×20230221111⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20230221161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3371703516 + ... + 3371703521.

It is an arithmetic number, because the mean of its divisors is an integer number (6743407038).

Almost surely, 2^20230221111 is an apocalyptic number.

20230221111 is a deficient number, since it is larger than the sum of its proper divisors (6743407041).

20230221111 is an equidigital number, since it uses as much as digits as its factorization.

20230221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6743407040.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20230221111 its reverse (11112203202), we get a palindrome (31342424313).

The spelling of 20230221111 in words is "twenty billion, two hundred thirty million, two hundred twenty-one thousand, one hundred eleven".