201422421515 has 16 divisors (see below), whose sum is σ = 276359946240. Its totient is φ = 138056490720.

The previous prime is 201422421493. The next prime is 201422421521. The reversal of 201422421515 is 515124224102.

It is not a de Polignac number, because 201422421515 - 2³⁴ = 184242552331 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1206791 + ... + 1363520.

It is an arithmetic number, because the mean of its divisors is an integer number (17272496640).

Almost surely, 2^201422421515 is an apocalyptic number.

201422421515 is a deficient number, since it is larger than the sum of its proper divisors (74937524725).

201422421515 is a wasteful number, since it uses less digits than its factorization.

201422421515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572562.

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 201422421515 its reverse (515124224102), we get a palindrome (716546645617).

The spelling of 201422421515 in words is "two hundred one billion, four hundred twenty-two million, four hundred twenty-one thousand, five hundred fifteen".