20222121111 has 8 divisors (see below), whose sum is σ = 28135125120. Its totient is φ = 12895265592.

The previous prime is 20222121107. The next prime is 20222121131. The reversal of 20222121111 is 11112122202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20222121111 - 2² = 20222121107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222121131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146537041 + ... + 146537178.

It is an arithmetic number, because the mean of its divisors is an integer number (3516890640).

Almost surely, 2^20222121111 is an apocalyptic number.

20222121111 is a deficient number, since it is larger than the sum of its proper divisors (7913004009).

20222121111 is a wasteful number, since it uses less digits than its factorization.

20222121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293074245.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20222121111 its reverse (11112122202), we get a palindrome (31334243313).

The spelling of 20222121111 in words is "twenty billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred eleven".