20010020221123 has 4 divisors (see below), whose sum is σ = 20216309089480. Its totient is φ = 19803731352768.

The previous prime is 20010020221097. The next prime is 20010020221151. The reversal of 20010020221123 is 32112202001002.

It is a happy number.

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 20010020221123 - 2⁴¹ = 17810996965571 is a prime.

It is a super-2 number, since 2×20010020221123² (a number of 27 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 = 20010020221097 and 20010020221106.

It is not an unprimeable number, because it can be changed into a prime (20010020221523) 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, 103144434033 + ... + 103144434226.

It is an arithmetic number, because the mean of its divisors is an integer number (5054077272370).

Almost surely, 2^{20010020221123} is an apocalyptic number.

20010020221123 is a deficient number, since it is larger than the sum of its proper divisors (206288868357).

20010020221123 is an equidigital number, since it uses as much as digits as its factorization.

20010020221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206288868356.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20010020221123 its reverse (32112202001002), we get a palindrome (52122222222125).

The spelling of 20010020221123 in words is "twenty trillion, ten billion, twenty million, two hundred twenty-one thousand, one hundred twenty-three".