1021100221010 has 8 divisors (see below), whose sum is σ = 1837980397836. Its totient is φ = 408440088400.

The previous prime is 1021100221007. The next prime is 1021100221019. The reversal of 1021100221010 is 101220011201.

It can be written as a sum of positive squares in 2 ways, for example, as 837248790169 + 183851430841 = 915013^2 + 428779^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1021100221010² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021100220982 and 1021100221000.

It is not an unprimeable number, because it can be changed into a prime (1021100221019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51055011041 + ... + 51055011060.

Almost surely, 2^{1021100221010} is an apocalyptic number.

1021100221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021100221010 is a deficient number, since it is larger than the sum of its proper divisors (816880176826).

1021100221010 is a wasteful number, since it uses less digits than its factorization.

1021100221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102110022108.

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

Adding to 1021100221010 its reverse (101220011201), we get a palindrome (1122320232211).

The spelling of 1021100221010 in words is "one trillion, twenty-one billion, one hundred million, two hundred twenty-one thousand, ten".