1011000221010 has 80 divisors (see below), whose sum is σ = 2927580157656. Its totient is φ = 248861590272.

The previous prime is 1011000220973. The next prime is 1011000221039. The reversal of 1011000221010 is 101220001101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 832231079289 + 178769141721 = 912267^2 + 422811^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1011000220983 and 1011000221001.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 47995179 + ... + 48016238.

Almost surely, 2^{1011000221010} is an apocalyptic number.

1011000221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011000221010 is an abundant number, since it is smaller than the sum of its proper divisors (1916579936646).

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

1011000221010 is a wasteful number, since it uses less digits than its factorization.

1011000221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96011449 (or 96011440 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1011000221010 its reverse (101220001101), we get a palindrome (1112220222111).

The spelling of 1011000221010 in words is "one trillion, eleven billion, two hundred twenty-one thousand, ten".