101131211223 has 48 divisors (see below), whose sum is σ = 172976621376. Its totient is φ = 55729658880.

The previous prime is 101131211197. The next prime is 101131211231. The reversal of 101131211223 is 322112131101.

101131211223 is a `hidden beast` number, since 101 + 131 + 211 + 223 = 666.

It is not a de Polignac number, because 101131211223 - 2⁹ = 101131210711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101131211196 and 101131211205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101131211273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71433 + ... + 455373.

It is an arithmetic number, because the mean of its divisors is an integer number (3603679612).

Almost surely, 2^101131211223 is an apocalyptic number.

101131211223 is a deficient number, since it is larger than the sum of its proper divisors (71845410153).

101131211223 is a wasteful number, since it uses less digits than its factorization.

101131211223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384104 (or 384101 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 101131211223 its reverse (322112131101), we get a palindrome (423243342324).

The spelling of 101131211223 in words is "one hundred one billion, one hundred thirty-one million, two hundred eleven thousand, two hundred twenty-three".