101221103321231 has 16 divisors (see below), whose sum is σ = 101853177154560. Its totient is φ = 100590497088480.

The previous prime is 101221103321213. The next prime is 101221103321251. The reversal of 101221103321231 is 132123301122101.

It is a happy number.

It is not a de Polignac number, because 101221103321231 - 2⁶ = 101221103321167 is a prime.

It is a super-2 number, since 2×101221103321231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101221103321197 and 101221103321206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221103321201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1675899125 + ... + 1675959521.

It is an arithmetic number, because the mean of its divisors is an integer number (6365823572160).

Almost surely, 2^{101221103321231} is an apocalyptic number.

101221103321231 is a deficient number, since it is larger than the sum of its proper divisors (632073833329).

101221103321231 is a wasteful number, since it uses less digits than its factorization.

101221103321231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72374.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 101221103321231 its reverse (132123301122101), we get a palindrome (233344404443332).

The spelling of 101221103321231 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred three million, three hundred twenty-one thousand, two hundred thirty-one".