201021242030 has 64 divisors (see below), whose sum is σ = 436833077760. Its totient is φ = 65063274624.

The previous prime is 201021241991. The next prime is 201021242033. The reversal of 201021242030 is 30242120102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021242033) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 109352 + ... + 643428.

It is an arithmetic number, because the mean of its divisors is an integer number (6825516840).

Almost surely, 2^201021242030 is an apocalyptic number.

201021242030 is an abundant number, since it is smaller than the sum of its proper divisors (235811835730).

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

201021242030 is a wasteful number, since it uses less digits than its factorization.

201021242030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534393.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 201021242030 its reverse (30242120102), we get a palindrome (231263362132).

The spelling of 201021242030 in words is "two hundred one billion, twenty-one million, two hundred forty-two thousand, thirty".