2020123100 has 18 divisors (see below), whose sum is σ = 4383667344. Its totient is φ = 808049200.

The previous prime is 2020123099. The next prime is 2020123103. The reversal of 2020123100 is 13210202.

It is a happy number.

It is a super-2 number, since 2×2020123100² = 8161794678307220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020123103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10100516 + ... + 10100715.

Almost surely, 2^2020123100 is an apocalyptic number.

2020123100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020123100 is an abundant number, since it is smaller than the sum of its proper divisors (2363544244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2020123100 is a wasteful number, since it uses less digits than its factorization.

2020123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20201245 (or 20201238 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2020123100 is about 44945.7795571509. The cubic root of 2020123100 is about 1264.1325428161.

Adding to 2020123100 its reverse (13210202), we get a palindrome (2033333302).

The spelling of 2020123100 in words is "two billion, twenty million, one hundred twenty-three thousand, one hundred".