10122220 has 24 divisors (see below), whose sum is σ = 21471408. Its totient is φ = 4008000.

The previous prime is 10122209. The next prime is 10122221. The reversal of 10122220 is 2222101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 10122197 and 10122206.

It is not an unprimeable number, because it can be changed into a prime (10122221) 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, 486 + ... + 4525.

It is an arithmetic number, because the mean of its divisors is an integer number (894642).

Almost surely, 2^10122220 is an apocalyptic number.

10122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10122220 is an abundant number, since it is smaller than the sum of its proper divisors (11349188).

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

10122220 is a wasteful number, since it uses less digits than its factorization.

10122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5121 (or 5119 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 10122220 is about 3181.5436504942. The cubic root of 10122220 is about 216.3176339618.

Adding to 10122220 its reverse (2222101), we get a palindrome (12344321).

The spelling of 10122220 in words is "ten million, one hundred twenty-two thousand, two hundred twenty".