101203213021 has 8 divisors (see below), whose sum is σ = 102319250040. Its totient is φ = 100088659968.

The previous prime is 101203213019. The next prime is 101203213049. The reversal of 101203213021 is 120312302101.

It can be written as a sum of positive squares in 4 ways, for example, as 1754436996 + 99448776025 = 41886^2 + 315355^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101203213021 - 2¹ = 101203213019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101203212986 and 101203213004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101203213061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233566 + ... + 506911.

It is an arithmetic number, because the mean of its divisors is an integer number (12789906255).

Almost surely, 2^101203213021 is an apocalyptic number.

It is an amenable number.

101203213021 is a deficient number, since it is larger than the sum of its proper divisors (1116037019).

101203213021 is an equidigital number, since it uses as much as digits as its factorization.

101203213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741983.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 101203213021 its reverse (120312302101), we get a palindrome (221515515122).

The spelling of 101203213021 in words is "one hundred one billion, two hundred three million, two hundred thirteen thousand, twenty-one".