201442420101 has 16 divisors (see below), whose sum is σ = 289325748096. Its totient is φ = 123932383296.

The previous prime is 201442420079. The next prime is 201442420147. The reversal of 201442420101 is 101024244102.

It is not a de Polignac number, because 201442420101 - 2²² = 201438225797 is a prime.

It is a super-2 number, since 2×201442420101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201442424101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517890 + ... + 819203.

It is an arithmetic number, because the mean of its divisors is an integer number (18082859256).

Almost surely, 2^201442420101 is an apocalyptic number.

It is an amenable number.

201442420101 is a deficient number, since it is larger than the sum of its proper divisors (87883327995).

201442420101 is a wasteful number, since it uses less digits than its factorization.

201442420101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340972.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 201442420101 its reverse (101024244102), we get a palindrome (302466664203).

The spelling of 201442420101 in words is "two hundred one billion, four hundred forty-two million, four hundred twenty thousand, one hundred one".