101202002021 has 16 divisors (see below), whose sum is σ = 107974425600. Its totient is φ = 94581689328.

The previous prime is 101202002009. The next prime is 101202002029. The reversal of 101202002021 is 120200202101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 101202002021 - 2²² = 101197807717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101202001993 and 101202002011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101202002029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381746 + ... + 590028.

It is an arithmetic number, because the mean of its divisors is an integer number (6748401600).

Almost surely, 2^101202002021 is an apocalyptic number.

It is an amenable number.

101202002021 is a deficient number, since it is larger than the sum of its proper divisors (6772423579).

101202002021 is a wasteful number, since it uses less digits than its factorization.

101202002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208648.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 101202002021 its reverse (120200202101), we get a palindrome (221402204122).

The spelling of 101202002021 in words is "one hundred one billion, two hundred two million, two thousand, twenty-one".