101212012021021 has 16 divisors (see below), whose sum is σ = 111508885483776. Its totient is φ = 91097811000000.

The previous prime is 101212012021013. The next prime is 101212012021049. The reversal of 101212012021021 is 120120210212101.

It is a cyclic number.

It is not a de Polignac number, because 101212012021021 - 2³ = 101212012021013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101212012020986 and 101212012021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212012021921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47963356 + ... + 50029066.

It is an arithmetic number, because the mean of its divisors is an integer number (6969305342736).

Almost surely, 2^{101212012021021} is an apocalyptic number.

101212012021021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101212012021021 is a deficient number, since it is larger than the sum of its proper divisors (10296873462755).

101212012021021 is a wasteful number, since it uses less digits than its factorization.

101212012021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109924.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 101212012021021 its reverse (120120210212101), we get a palindrome (221332222233122).

The spelling of 101212012021021 in words is "one hundred one trillion, two hundred twelve billion, twelve million, twenty-one thousand, twenty-one".