2020121000100 has 576 divisors, whose sum is σ = 7911715840000. Its totient is φ = 431896458240.

The previous prime is 2020121000077. The next prime is 2020121000123. The reversal of 2020121000100 is 10001210202.

It is an interprime number because it is at equal distance from previous prime (2020121000077) and next prime (2020121000123).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 28333296 + ... + 28404504.

Almost surely, 2^{2020121000100} is an apocalyptic number.

2020121000100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2020121000100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3955857920000).

2020121000100 is an abundant number, since it is smaller than the sum of its proper divisors (5891594839900).

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

2020121000100 is a wasteful number, since it uses less digits than its factorization.

2020121000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71337 (or 71324 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2020121000100 its reverse (10001210202), we get a palindrome (2030122210302).

The spelling of 2020121000100 in words is "two trillion, twenty billion, one hundred twenty-one million, one hundred", and thus it is an aban number.