1022210020 has 36 divisors (see below), whose sum is σ = 2324476980. Its totient is φ = 377430144.

The previous prime is 1022209997. The next prime is 1022210029. The reversal of 1022210020 is 200122201.

It can be written as a sum of positive squares in 6 ways, for example, as 142850304 + 879359716 = 11952^2 + 29654^2 .

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 = 1022209979 and 1022210006.

It is not an unprimeable number, because it can be changed into a prime (1022210029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147835 + ... + 154594.

It is an arithmetic number, because the mean of its divisors is an integer number (64568805).

Almost surely, 2^1022210020 is an apocalyptic number.

1022210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022210020 is an abundant number, since it is smaller than the sum of its proper divisors (1302266960).

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

1022210020 is a wasteful number, since it uses less digits than its factorization.

1022210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302464 (or 302449 counting only the distinct ones).

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

The square root of 1022210020 is about 31972.0193294074. The cubic root of 1022210020 is about 1007.3491969918.

Adding to 1022210020 its reverse (200122201), we get a palindrome (1222332221).

It can be divided in two parts, 102 and 2210020, that added together give a palindrome (2210122).

The spelling of 1022210020 in words is "one billion, twenty-two million, two hundred ten thousand, twenty".