1021110221021 has 8 divisors (see below), whose sum is σ = 1114514720544. Its totient is φ = 927801771120.

The previous prime is 1021110221003. The next prime is 1021110221069. The reversal of 1021110221021 is 1201220111201.

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

It is a cyclic number.

It is not a de Polignac number, because 1021110221021 - 2⁶ = 1021110220957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021110220987 and 1021110221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021110221071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23990171 + ... + 24032696.

It is an arithmetic number, because the mean of its divisors is an integer number (139314340068).

Almost surely, 2^{1021110221021} is an apocalyptic number.

1021110221021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1021110221021 is a deficient number, since it is larger than the sum of its proper divisors (93404499523).

1021110221021 is a wasteful number, since it uses less digits than its factorization.

1021110221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48024811.

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

Adding to 1021110221021 its reverse (1201220111201), we get a palindrome (2222330332222).

The spelling of 1021110221021 in words is "one trillion, twenty-one billion, one hundred ten million, two hundred twenty-one thousand, twenty-one".