101001221031 has 8 divisors (see below), whose sum is σ = 134746460800. Its totient is φ = 67295064312.

The previous prime is 101001221029. The next prime is 101001221081. The reversal of 101001221031 is 130122100101.

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

It is not a de Polignac number, because 101001221031 - 2¹ = 101001221029 is a prime.

It is a super-2 number, since 2×101001221031² (a number of 23 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 = 101001220998 and 101001221016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101001221081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9764731 + ... + 9775068.

It is an arithmetic number, because the mean of its divisors is an integer number (16843307600).

Almost surely, 2^101001221031 is an apocalyptic number.

101001221031 is a deficient number, since it is larger than the sum of its proper divisors (33745239769).

101001221031 is a wasteful number, since it uses less digits than its factorization.

101001221031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19541525.

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

Adding to 101001221031 its reverse (130122100101), we get a palindrome (231123321132).

The spelling of 101001221031 in words is "one hundred one billion, one million, two hundred twenty-one thousand, thirty-one".