10101021021020 has 12 divisors (see below), whose sum is σ = 21212144144184. Its totient is φ = 4040408408400.

The previous prime is 10101021021017. The next prime is 10101021021043. The reversal of 10101021021020 is 2012012010101.

It is a junction number, because it is equal to n+sod(n) for n = 10101021020992 and 10101021021010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252525525506 + ... + 252525525545.

It is an arithmetic number, because the mean of its divisors is an integer number (1767678678682).

Almost surely, 2^{10101021021020} is an apocalyptic number.

10101021021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10101021021020 is an abundant number, since it is smaller than the sum of its proper divisors (11111123123164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10101021021020 is a wasteful number, since it uses less digits than its factorization.

10101021021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505051051060 (or 505051051058 counting only the distinct ones).

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

Adding to 10101021021020 its reverse (2012012010101), we get a palindrome (12113033031121).

The spelling of 10101021021020 in words is "ten trillion, one hundred one billion, twenty-one million, twenty-one thousand, twenty".