4202021123111 has 4 divisors (see below), whose sum is σ = 4802309854992. Its totient is φ = 3601732391232.

The previous prime is 4202021123107. The next prime is 4202021123117. The reversal of 4202021123111 is 1113211202024.

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

It is a cyclic number.

It is not a de Polignac number, because 4202021123111 - 2² = 4202021123107 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 (4202021123117) 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, 300144365930 + ... + 300144365943.

It is an arithmetic number, because the mean of its divisors is an integer number (1200577463748).

Almost surely, 2^{4202021123111} is an apocalyptic number.

4202021123111 is a deficient number, since it is larger than the sum of its proper divisors (600288731881).

4202021123111 is an equidigital number, since it uses as much as digits as its factorization.

4202021123111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600288731880.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 4202021123111 its reverse (1113211202024), we get a palindrome (5315232325135).

The spelling of 4202021123111 in words is "four trillion, two hundred two billion, twenty-one million, one hundred twenty-three thousand, one hundred eleven".