20210220123 has 8 divisors (see below), whose sum is σ = 26984970000. Its totient is φ = 13454475168.

The previous prime is 20210220119. The next prime is 20210220131. The reversal of 20210220123 is 32102201202.

It is a happy number.

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

It is not a de Polignac number, because 20210220123 - 2² = 20210220119 is a prime.

It is a super-3 number, since 3×20210220123³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (20210220193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4748748 + ... + 4753001.

It is an arithmetic number, because the mean of its divisors is an integer number (3373121250).

Almost surely, 2^20210220123 is an apocalyptic number.

20210220123 is a deficient number, since it is larger than the sum of its proper divisors (6774749877).

20210220123 is an equidigital number, since it uses as much as digits as its factorization.

20210220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9502461.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20210220123 its reverse (32102201202), we get a palindrome (52312421325).

The spelling of 20210220123 in words is "twenty billion, two hundred ten million, two hundred twenty thousand, one hundred twenty-three".