10101222212123 has 4 divisors (see below), whose sum is σ = 11544253956720. Its totient is φ = 8658190467528.

The previous prime is 10101222212119. The next prime is 10101222212161. The reversal of 10101222212123 is 32121222210101.

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

It is not a de Polignac number, because 10101222212123 - 2² = 10101222212119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10101222212095 and 10101222212104.

It is not an unprimeable number, because it can be changed into a prime (10101222212173) 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 3 ways as a sum of consecutive naturals, for example, 721515872288 + ... + 721515872301.

It is an arithmetic number, because the mean of its divisors is an integer number (2886063489180).

Almost surely, 2^{10101222212123} is an apocalyptic number.

10101222212123 is a deficient number, since it is larger than the sum of its proper divisors (1443031744597).

10101222212123 is an equidigital number, since it uses as much as digits as its factorization.

10101222212123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443031744596.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 10101222212123 its reverse (32121222210101), we get a palindrome (42222444422224).

The spelling of 10101222212123 in words is "ten trillion, one hundred one billion, two hundred twenty-two million, two hundred twelve thousand, one hundred twenty-three".