2021012101200 has 60 divisors (see below), whose sum is σ = 6473975434688. Its totient is φ = 538936560000.

The previous prime is 2021012101159. The next prime is 2021012101247. The reversal of 2021012101200 is 21012101202.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 842087176 + ... + 842089575.

Almost surely, 2^{2021012101200} is an apocalyptic number.

2021012101200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021012101200 is an abundant number, since it is smaller than the sum of its proper divisors (4452963333488).

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

2021012101200 is a wasteful number, since it uses less digits than its factorization.

2021012101200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684176772 (or 1684176761 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2021012101200 its reverse (21012101202), we get a palindrome (2042024202402).

It can be divided in two parts, 2021012 and 101200, that added together give a palindrome (2122212).

The spelling of 2021012101200 in words is "two trillion, twenty-one billion, twelve million, one hundred one thousand, two hundred".