201042020422 has 4 divisors (see below), whose sum is σ = 301563030636. Its totient is φ = 100521010210.

The previous prime is 201042020381. The next prime is 201042020471. The reversal of 201042020422 is 224020240102.

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

It is a self number, because there is not a number n which added to its sum of digits gives 201042020422.

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, 50260505104 + ... + 50260505107.

It is an arithmetic number, because the mean of its divisors is an integer number (75390757659).

Almost surely, 2^201042020422 is an apocalyptic number.

201042020422 is a deficient number, since it is larger than the sum of its proper divisors (100521010214).

201042020422 is a wasteful number, since it uses less digits than its factorization.

201042020422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100521010213.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 201042020422 its reverse (224020240102), we get a palindrome (425062260524).

The spelling of 201042020422 in words is "two hundred one billion, forty-two million, twenty thousand, four hundred twenty-two".