2021002100012 has 24 divisors (see below), whose sum is σ = 4083674351904. Its totient is φ = 857214438912.

The previous prime is 2021002100011. The next prime is 2021002100017. The reversal of 2021002100012 is 2100012001202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2021002099966 and 2021002100002.

It is not an unprimeable number, because it can be changed into a prime (2021002100011) 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, 372052163 + ... + 372057594.

It is an arithmetic number, because the mean of its divisors is an integer number (170153097996).

Almost surely, 2^{2021002100012} is an apocalyptic number.

It is an amenable number.

2021002100012 is an abundant number, since it is smaller than the sum of its proper divisors (2062672251892).

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

2021002100012 is a wasteful number, since it uses less digits than its factorization.

2021002100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744109865 (or 744109863 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2021002100012 its reverse (2100012001202), we get a palindrome (4121014101214).

The spelling of 2021002100012 in words is "two trillion, twenty-one billion, two million, one hundred thousand, twelve".