101202021021 has 32 divisors (see below), whose sum is σ = 142974000000. Its totient is φ = 63497226240.

The previous prime is 101202020981. The next prime is 101202021121. The reversal of 101202021021 is 120120202101.

It is not a de Polignac number, because 101202021021 - 2⁶ = 101202020957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101202020988 and 101202021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101202021121) 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 31 ways as a sum of consecutive naturals, for example, 5388355 + ... + 5407103.

It is an arithmetic number, because the mean of its divisors is an integer number (4467937500).

Almost surely, 2^101202021021 is an apocalyptic number.

It is an amenable number.

101202021021 is a deficient number, since it is larger than the sum of its proper divisors (41771978979).

101202021021 is a wasteful number, since it uses less digits than its factorization.

101202021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19389.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 101202021021 its reverse (120120202101), we get a palindrome (221322223122).

The spelling of 101202021021 in words is "one hundred one billion, two hundred two million, twenty-one thousand, twenty-one".