101213122231 has 4 divisors (see below), whose sum is σ = 108998747032. Its totient is φ = 93427497432.

The previous prime is 101213122229. The next prime is 101213122249. The reversal of 101213122231 is 132221312101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101213122231 - 2¹ = 101213122229 is a prime.

It is a super-2 number, since 2×101213122231² (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 = 101213122199 and 101213122208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101213162231) 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, 3892812381 + ... + 3892812406.

It is an arithmetic number, because the mean of its divisors is an integer number (27249686758).

Almost surely, 2^101213122231 is an apocalyptic number.

101213122231 is a deficient number, since it is larger than the sum of its proper divisors (7785624801).

101213122231 is an equidigital number, since it uses as much as digits as its factorization.

101213122231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7785624800.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 101213122231 its reverse (132221312101), we get a palindrome (233434434332).

The spelling of 101213122231 in words is "one hundred one billion, two hundred thirteen million, one hundred twenty-two thousand, two hundred thirty-one".