10101220123 has 4 divisors (see below), whose sum is σ = 10695409560. Its totient is φ = 9507030688.

The previous prime is 10101220121. The next prime is 10101220147. The reversal of 10101220123 is 32102210101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10101220123 - 2¹ = 10101220121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10101220121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297094693 + ... + 297094726.

It is an arithmetic number, because the mean of its divisors is an integer number (2673852390).

Almost surely, 2^10101220123 is an apocalyptic number.

10101220123 is a deficient number, since it is larger than the sum of its proper divisors (594189437).

10101220123 is an equidigital number, since it uses as much as digits as its factorization.

10101220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594189436.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10101220123 its reverse (32102210101), we get a palindrome (42203430224).

The spelling of 10101220123 in words is "ten billion, one hundred one million, two hundred twenty thousand, one hundred twenty-three".