20220121111 has 8 divisors (see below), whose sum is σ = 20466359424. Its totient is φ = 19973945400.

The previous prime is 20220121091. The next prime is 20220121133. The reversal of 20220121111 is 11112102202.

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

It is a cyclic number.

It is not a de Polignac number, because 20220121111 - 2²³ = 20211732503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20220121091 and 20220121100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220121171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1274550 + ... + 1290316.

It is an arithmetic number, because the mean of its divisors is an integer number (2558294928).

Almost surely, 2^20220121111 is an apocalyptic number.

20220121111 is a deficient number, since it is larger than the sum of its proper divisors (246238313).

20220121111 is a wasteful number, since it uses less digits than its factorization.

20220121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31301.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20220121111 its reverse (11112102202), we get a palindrome (31332223313).

The spelling of 20220121111 in words is "twenty billion, two hundred twenty million, one hundred twenty-one thousand, one hundred eleven".