1001210220 has 60 divisors (see below), whose sum is σ = 3140838624. Its totient is φ = 266988960.

The previous prime is 1001210209. The next prime is 1001210251. The reversal of 1001210220 is 220121001.

It is a tau number, because it is divible by the number of its divisors (60).

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 307396 + ... + 310635.

Almost surely, 2^1001210220 is an apocalyptic number.

1001210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001210220 is an abundant number, since it is smaller than the sum of its proper divisors (2139628404).

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

1001210220 is a wasteful number, since it uses less digits than its factorization.

1001210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618052 (or 618041 counting only the distinct ones).

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

The square root of 1001210220 is about 31641.9060740658. The cubic root of 1001210220 is about 1000.4032440391.

Adding to 1001210220 its reverse (220121001), we get a palindrome (1221331221).

The spelling of 1001210220 in words is "one billion, one million, two hundred ten thousand, two hundred twenty".