20221110 has 128 divisors (see below), whose sum is σ = 66447360. Its totient is φ = 4261248.

The previous prime is 20221099. The next prime is 20221127. The reversal of 20221110 is 1112202.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20221092 and 20221101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24159 + ... + 24981.

It is an arithmetic number, because the mean of its divisors is an integer number (519120).

Almost surely, 2^20221110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20221110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33223680).

20221110 is an abundant number, since it is smaller than the sum of its proper divisors (46226250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20221110 is a wasteful number, since it uses less digits than its factorization.

20221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 20221110 is about 4496.7888542826. The cubic root of 20221110 is about 272.4384059648.

Adding to 20221110 its reverse (1112202), we get a palindrome (21333312).

It can be divided in two parts, 202 and 21110, that added together give a palindrome (21312).

The spelling of 20221110 in words is "twenty million, two hundred twenty-one thousand, one hundred ten".