2021000220123 has 8 divisors (see below), whose sum is σ = 2695832987136. Its totient is φ = 1346750466600.

The previous prime is 2021000220091. The next prime is 2021000220139. The reversal of 2021000220123 is 3210220001202.

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 2021000220123 - 2⁵ = 2021000220091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021000220223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145745283 + ... + 145759148.

It is an arithmetic number, because the mean of its divisors is an integer number (336979123392).

Almost surely, 2^{2021000220123} is an apocalyptic number.

2021000220123 is a deficient number, since it is larger than the sum of its proper divisors (674832767013).

2021000220123 is a wasteful number, since it uses less digits than its factorization.

2021000220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291506745.

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

Adding to 2021000220123 its reverse (3210220001202), we get a palindrome (5231220221325).

The spelling of 2021000220123 in words is "two trillion, twenty-one billion, two hundred twenty thousand, one hundred twenty-three".