101220121123 has 8 divisors (see below), whose sum is σ = 111038834880. Its totient is φ = 91504221480.

The previous prime is 101220121111. The next prime is 101220121129. The reversal of 101220121123 is 321121022101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101220121123 is a prime.

It is a super-2 number, since 2×101220121123² (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 = 101220121097 and 101220121106.

It is not an unprimeable number, because it can be changed into a prime (101220121129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25701465 + ... + 25705402.

It is an arithmetic number, because the mean of its divisors is an integer number (13879854360).

Almost surely, 2^101220121123 is an apocalyptic number.

101220121123 is a deficient number, since it is larger than the sum of its proper divisors (9818713757).

101220121123 is a wasteful number, since it uses less digits than its factorization.

101220121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51407057.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 101220121123 its reverse (321121022101), we get a palindrome (422341143224).

The spelling of 101220121123 in words is "one hundred one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred twenty-three".