101223020121 has 8 divisors (see below), whose sum is σ = 134968390560. Its totient is φ = 67479831552.

The previous prime is 101223020071. The next prime is 101223020141. The reversal of 101223020121 is 121020322101.

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

It is not a de Polignac number, because 101223020121 - 2⁹ = 101223019609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101223020121.

It is not an unprimeable number, because it can be changed into a prime (101223020141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433960 + ... + 625113.

It is an arithmetic number, because the mean of its divisors is an integer number (16871048820).

Almost surely, 2^101223020121 is an apocalyptic number.

It is an amenable number.

101223020121 is a deficient number, since it is larger than the sum of its proper divisors (33745370439).

101223020121 is a wasteful number, since it uses less digits than its factorization.

101223020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090935.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 101223020121 its reverse (121020322101), we get a palindrome (222243342222).

The spelling of 101223020121 in words is "one hundred one billion, two hundred twenty-three million, twenty thousand, one hundred twenty-one".