20122206 has 32 divisors (see below), whose sum is σ = 43763328. Its totient is φ = 6131040.

The previous prime is 20122199. The next prime is 20122213. The reversal of 20122206 is 60222102.

It is an interprime number because it is at equal distance from previous prime (20122199) and next prime (20122213).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7141 + ... + 9551.

It is an arithmetic number, because the mean of its divisors is an integer number (1367604).

Almost surely, 2^20122206 is an apocalyptic number.

20122206 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20122206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21881664).

20122206 is an abundant number, since it is smaller than the sum of its proper divisors (23641122).

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

20122206 is a wasteful number, since it uses less digits than its factorization.

20122206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20122206 is about 4485.7781933573. The cubic root of 20122206 is about 271.9935029446.

Adding to 20122206 its reverse (60222102), we get a palindrome (80344308).

The spelling of 20122206 in words is "twenty million, one hundred twenty-two thousand, two hundred six".