2021020021102 has 4 divisors (see below), whose sum is σ = 3031530031656. Its totient is φ = 1010510010550.

The previous prime is 2021020021087. The next prime is 2021020021151. The reversal of 2021020021102 is 2011200201202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505255005274 + ... + 505255005277.

It is an arithmetic number, because the mean of its divisors is an integer number (757882507914).

Almost surely, 2^{2021020021102} is an apocalyptic number.

2021020021102 is a deficient number, since it is larger than the sum of its proper divisors (1010510010554).

2021020021102 is a wasteful number, since it uses less digits than its factorization.

2021020021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010510010553.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2021020021102 its reverse (2011200201202), we get a palindrome (4032220222304).

The spelling of 2021020021102 in words is "two trillion, twenty-one billion, twenty million, twenty-one thousand, one hundred two".