2021212001101 has 4 divisors (see below), whose sum is σ = 2021312824704. Its totient is φ = 2021111177500.

The previous prime is 2021212001089. The next prime is 2021212001141. The reversal of 2021212001101 is 1011002121202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2021212001101 - 2¹⁹ = 2021211476813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021212001141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50381725 + ... + 50421826.

It is an arithmetic number, because the mean of its divisors is an integer number (505328206176).

Almost surely, 2^{2021212001101} is an apocalyptic number.

It is an amenable number.

2021212001101 is a deficient number, since it is larger than the sum of its proper divisors (100823603).

2021212001101 is a wasteful number, since it uses less digits than its factorization.

2021212001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100823602.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2021212001101 its reverse (1011002121202), we get a palindrome (3032214122303).

The spelling of 2021212001101 in words is "two trillion, twenty-one billion, two hundred twelve million, one thousand, one hundred one".