20122101212123 has 4 divisors (see below), whose sum is σ = 20124713461968. Its totient is φ = 20119488962280.

The previous prime is 20122101212033. The next prime is 20122101212183. The reversal of 20122101212123 is 32121210122102.

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 20122101212123 - 2²² = 20122097017819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20122101212095 and 20122101212104.

It is not an unprimeable number, because it can be changed into a prime (20122101212183) 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, 1306113368 + ... + 1306128773.

It is an arithmetic number, because the mean of its divisors is an integer number (5031178365492).

Almost surely, 2^{20122101212123} is an apocalyptic number.

20122101212123 is a deficient number, since it is larger than the sum of its proper divisors (2612249845).

20122101212123 is an equidigital number, since it uses as much as digits as its factorization.

20122101212123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612249844.

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

Adding to 20122101212123 its reverse (32121210122102), we get a palindrome (52243311334225).

The spelling of 20122101212123 in words is "twenty trillion, one hundred twenty-two billion, one hundred one million, two hundred twelve thousand, one hundred twenty-three".