10211021102021 has 4 divisors (see below), whose sum is σ = 10214922908652. Its totient is φ = 10207119295392.

The previous prime is 10211021102017. The next prime is 10211021102089. The reversal of 10211021102021 is 12020112011201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6928945379521 + 3282075722500 = 2632289^2 + 1811650^2 .

It is a cyclic number.

It is not a de Polignac number, because 10211021102021 - 2² = 10211021102017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211021101987 and 10211021102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211021302021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1950899390 + ... + 1950904623.

It is an arithmetic number, because the mean of its divisors is an integer number (2553730727163).

Almost surely, 2^{10211021102021} is an apocalyptic number.

It is an amenable number.

10211021102021 is a deficient number, since it is larger than the sum of its proper divisors (3901806631).

10211021102021 is an equidigital number, since it uses as much as digits as its factorization.

10211021102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901806630.

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

Adding to 10211021102021 its reverse (12020112011201), we get a palindrome (22231133113222).

The spelling of 10211021102021 in words is "ten trillion, two hundred eleven billion, twenty-one million, one hundred two thousand, twenty-one".