1021221021110 has 16 divisors (see below), whose sum is σ = 1838519472816. Its totient is φ = 408416934048.

The previous prime is 1021221021089. The next prime is 1021221021127. The reversal of 1021221021110 is 111201221201.

1021221021110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 8874272 + ... + 8988611.

It is an arithmetic number, because the mean of its divisors is an integer number (114907467051).

Almost surely, 2^{1021221021110} is an apocalyptic number.

1021221021110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021221021110 is a deficient number, since it is larger than the sum of its proper divisors (817298451706).

1021221021110 is a wasteful number, since it uses less digits than its factorization.

1021221021110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17868607.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1021221021110 its reverse (111201221201), we get a palindrome (1132422242311).

The spelling of 1021221021110 in words is "one trillion, twenty-one billion, two hundred twenty-one million, twenty-one thousand, one hundred ten".