101223031011 has 32 divisors (see below), whose sum is σ = 140497936128. Its totient is φ = 64771539840.

The previous prime is 101223031009. The next prime is 101223031051. The reversal of 101223031011 is 110130322101.

It is a happy number.

It is not a de Polignac number, because 101223031011 - 2¹ = 101223031009 is a prime.

It is a super-2 number, since 2×101223031011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101223031051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9335085 + ... + 9345921.

It is an arithmetic number, because the mean of its divisors is an integer number (4390560504).

Almost surely, 2^101223031011 is an apocalyptic number.

101223031011 is a deficient number, since it is larger than the sum of its proper divisors (39274905117).

101223031011 is a wasteful number, since it uses less digits than its factorization.

101223031011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12131.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 101223031011 its reverse (110130322101), we get a palindrome (211353353112).

The spelling of 101223031011 in words is "one hundred one billion, two hundred twenty-three million, thirty-one thousand, eleven".