101221022201021 has 4 divisors (see below), whose sum is σ = 101891360096544. Its totient is φ = 100550684305500.

The previous prime is 101221022201003. The next prime is 101221022201023. The reversal of 101221022201021 is 120102220122101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101221022201021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221022201023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335168947535 + ... + 335168947836.

It is an arithmetic number, because the mean of its divisors is an integer number (25472840024136).

Almost surely, 2^{101221022201021} is an apocalyptic number.

It is an amenable number.

101221022201021 is a deficient number, since it is larger than the sum of its proper divisors (670337895523).

101221022201021 is an equidigital number, since it uses as much as digits as its factorization.

101221022201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670337895522.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 101221022201021 its reverse (120102220122101), we get a palindrome (221323242323122).

The spelling of 101221022201021 in words is "one hundred one trillion, two hundred twenty-one billion, twenty-two million, two hundred one thousand, twenty-one".