2111420230021 has 4 divisors (see below), whose sum is σ = 2160523026112. Its totient is φ = 2062317433932.

The previous prime is 2111420230009. The next prime is 2111420230037. The reversal of 2111420230021 is 1200320241112.

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 2111420230021 - 2³³ = 2102830295429 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 (2111420230921) 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, 24551397981 + ... + 24551398066.

It is an arithmetic number, because the mean of its divisors is an integer number (540130756528).

Almost surely, 2^{2111420230021} is an apocalyptic number.

It is an amenable number.

2111420230021 is a deficient number, since it is larger than the sum of its proper divisors (49102796091).

2111420230021 is an equidigital number, since it uses as much as digits as its factorization.

2111420230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49102796090.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2111420230021 its reverse (1200320241112), we get a palindrome (3311740471133).

The spelling of 2111420230021 in words is "two trillion, one hundred eleven billion, four hundred twenty million, two hundred thirty thousand, twenty-one".