101221123023 has 24 divisors (see below), whose sum is σ = 146874965328. Its totient is φ = 67173714432.

The previous prime is 101221122983. The next prime is 101221123033. The reversal of 101221123023 is 320321122101.

It is not a de Polignac number, because 101221123023 - 2¹³ = 101221114831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101221122987 and 101221123005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221123033) 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 23 ways as a sum of consecutive naturals, for example, 1837761 + ... + 1892037.

It is an arithmetic number, because the mean of its divisors is an integer number (6119790222).

Almost surely, 2^101221123023 is an apocalyptic number.

101221123023 is a deficient number, since it is larger than the sum of its proper divisors (45653842305).

101221123023 is a wasteful number, since it uses less digits than its factorization.

101221123023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55223 (or 55220 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 101221123023 its reverse (320321122101), we get a palindrome (421542245124).

The spelling of 101221123023 in words is "one hundred one billion, two hundred twenty-one million, one hundred twenty-three thousand, twenty-three".