201213231042 has 16 divisors (see below), whose sum is σ = 402636849120. Its totient is φ = 67036012512.

The previous prime is 201213231029. The next prime is 201213231097. The reversal of 201213231042 is 240132312102.

It is a super-2 number, since 2×201213231042² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8753692 + ... + 8776647.

It is an arithmetic number, because the mean of its divisors is an integer number (25164803070).

Almost surely, 2^201213231042 is an apocalyptic number.

201213231042 is an abundant number, since it is smaller than the sum of its proper divisors (201423618078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201213231042 is a wasteful number, since it uses less digits than its factorization.

201213231042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17532257.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 201213231042 its reverse (240132312102), we get a palindrome (441345543144).

The spelling of 201213231042 in words is "two hundred one billion, two hundred thirteen million, two hundred thirty-one thousand, forty-two".