201230211042 has 96 divisors (see below), whose sum is σ = 505025539200. Its totient is φ = 56718547200.

The previous prime is 201230211001. The next prime is 201230211043. The reversal of 201230211042 is 240112032102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (201230211043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7317334 + ... + 7344782.

It is an arithmetic number, because the mean of its divisors is an integer number (5260682700).

Almost surely, 2^201230211042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201230211042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252512769600).

201230211042 is an abundant number, since it is smaller than the sum of its proper divisors (303795328158).

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

201230211042 is a wasteful number, since it uses less digits than its factorization.

201230211042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28248 (or 28245 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 201230211042 its reverse (240112032102), we get a palindrome (441342243144).

The spelling of 201230211042 in words is "two hundred one billion, two hundred thirty million, two hundred eleven thousand, forty-two".