101321221021021 has 8 divisors (see below), whose sum is σ = 101751711292224. Its totient is φ = 100890943608000.

The previous prime is 101321221021001. The next prime is 101321221021057. The reversal of 101321221021021 is 120120122123101.

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 101321221021021 - 2¹⁷ = 101321220889949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101321221021021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101321221021001) 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, 52260481 + ... + 54164566.

It is an arithmetic number, because the mean of its divisors is an integer number (12718963911528).

Almost surely, 2^{101321221021021} is an apocalyptic number.

It is an amenable number.

101321221021021 is a deficient number, since it is larger than the sum of its proper divisors (430490271203).

101321221021021 is a wasteful number, since it uses less digits than its factorization.

101321221021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106429091.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 101321221021021 its reverse (120120122123101), we get a palindrome (221441343144122).

The spelling of 101321221021021 in words is "one hundred one trillion, three hundred twenty-one billion, two hundred twenty-one million, twenty-one thousand, twenty-one".