101220020021021 has 16 divisors (see below), whose sum is σ = 110473070313600. Its totient is φ = 91975513331520.

The previous prime is 101220020020997. The next prime is 101220020021027. The reversal of 101220020021021 is 120120020022101.

It is a cyclic number.

It is not a de Polignac number, because 101220020021021 - 2²⁶ = 101219952912157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101220020020987 and 101220020021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220020021027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415219856 + ... + 415463558.

It is an arithmetic number, because the mean of its divisors is an integer number (6904566894600).

Almost surely, 2^{101220020021021} is an apocalyptic number.

101220020021021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101220020021021 is a deficient number, since it is larger than the sum of its proper divisors (9253050292579).

101220020021021 is a wasteful number, since it uses less digits than its factorization.

101220020021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261076.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 101220020021021 its reverse (120120020022101), we get a palindrome (221340040043122).

The spelling of 101220020021021 in words is "one hundred one trillion, two hundred twenty billion, twenty million, twenty-one thousand, twenty-one".