201230231021 has 8 divisors (see below), whose sum is σ = 213820196544. Its totient is φ = 188723920320.

The previous prime is 201230231003. The next prime is 201230231039. The reversal of 201230231021 is 120132032102.

It is an interprime number because it is at equal distance from previous prime (201230231003) and next prime (201230231039).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201230231021 - 2²² = 201226036717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201230231221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20908745 + ... + 20918366.

It is an arithmetic number, because the mean of its divisors is an integer number (26727524568).

Almost surely, 2^201230231021 is an apocalyptic number.

It is an amenable number.

201230231021 is a deficient number, since it is larger than the sum of its proper divisors (12589965523).

201230231021 is a wasteful number, since it uses less digits than its factorization.

201230231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41827411.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 201230231021 its reverse (120132032102), we get a palindrome (321362263123).

The spelling of 201230231021 in words is "two hundred one billion, two hundred thirty million, two hundred thirty-one thousand, twenty-one".