1021220110010 has 16 divisors (see below), whose sum is σ = 1838227564800. Its totient is φ = 408481073616.

The previous prime is 1021220109989. The next prime is 1021220110049. The reversal of 1021220110010 is 100110221201.

It is a junction number, because it is equal to n+sod(n) for n = 1021220109973 and 1021220110000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233750 + ... + 1448129.

It is an arithmetic number, because the mean of its divisors is an integer number (114889222800).

Almost surely, 2^{1021220110010} is an apocalyptic number.

1021220110010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021220110010 is a deficient number, since it is larger than the sum of its proper divisors (817007454790).

1021220110010 is a wasteful number, since it uses less digits than its factorization.

1021220110010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742605.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1021220110010 its reverse (100110221201), we get a palindrome (1121330331211).

The spelling of 1021220110010 in words is "one trillion, twenty-one billion, two hundred twenty million, one hundred ten thousand, ten".