101221001010201 has 4 divisors (see below), whose sum is σ = 134961334680272. Its totient is φ = 67480667340132.

The previous prime is 101221001010023. The next prime is 101221001010313. The reversal of 101221001010201 is 102010100122101.

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 not a de Polignac number, because 101221001010201 - 2¹⁵ = 101221000977433 is a prime.

It is a super-2 number, since 2×101221001010201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101221001011201) 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, 16870166835031 + ... + 16870166835036.

It is an arithmetic number, because the mean of its divisors is an integer number (33740333670068).

Almost surely, 2^{101221001010201} is an apocalyptic number.

It is an amenable number.

101221001010201 is a deficient number, since it is larger than the sum of its proper divisors (33740333670071).

101221001010201 is an equidigital number, since it uses as much as digits as its factorization.

101221001010201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33740333670070.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101221001010201 its reverse (102010100122101), we get a palindrome (203231101132302).

The spelling of 101221001010201 in words is "one hundred one trillion, two hundred twenty-one billion, one million, ten thousand, two hundred one".