1001000222010 has 24 divisors (see below), whose sum is σ = 2602600577460. Its totient is φ = 266933392512.

The previous prime is 1001000221981. The next prime is 1001000222071. The reversal of 1001000222010 is 102220001001.

It can be written as a sum of positive squares in 2 ways, for example, as 975691548441 + 25308673569 = 987771^2 + 159087^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1001000221983 and 1001000222001.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5561112255 + ... + 5561112434.

Almost surely, 2^{1001000222010} is an apocalyptic number.

1001000222010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001000222010 is an abundant number, since it is smaller than the sum of its proper divisors (1601600355450).

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

1001000222010 is a wasteful number, since it uses less digits than its factorization.

1001000222010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11122224702 (or 11122224699 counting only the distinct ones).

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

Adding to 1001000222010 its reverse (102220001001), we get a palindrome (1103220223011).

The spelling of 1001000222010 in words is "one trillion, one billion, two hundred twenty-two thousand, ten".