1021102110021 has 8 divisors (see below), whose sum is σ = 1555965120064. Its totient is φ = 583486920000.

The previous prime is 1021102110011. The next prime is 1021102110043. The reversal of 1021102110021 is 1200112011201.

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

It is not a de Polignac number, because 1021102110021 - 2³⁰ = 1020028368197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021102109979 and 1021102110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021102110011) 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, 24311954980 + ... + 24311955021.

It is an arithmetic number, because the mean of its divisors is an integer number (194495640008).

Almost surely, 2^{1021102110021} is an apocalyptic number.

It is an amenable number.

1021102110021 is a deficient number, since it is larger than the sum of its proper divisors (534863010043).

1021102110021 is an equidigital number, since it uses as much as digits as its factorization.

1021102110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48623910011.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1021102110021 its reverse (1200112011201), we get a palindrome (2221214121222).

The spelling of 1021102110021 in words is "one trillion, twenty-one billion, one hundred two million, one hundred ten thousand, twenty-one".