202001111121204 has 36 divisors (see below), whose sum is σ = 520248144684996. Its totient is φ = 66063256466688.

The previous prime is 202001111121203. The next prime is 202001111121209. The reversal of 202001111121204 is 402121111100202.

It can be written as a sum of positive squares in 2 ways, for example, as 81521071325604 + 120480039795600 = 9028902^2 + 10976340^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202001111121203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52935299749 + ... + 52935303564.

It is an arithmetic number, because the mean of its divisors is an integer number (14451337352361).

Almost surely, 2^{202001111121204} is an apocalyptic number.

It is an amenable number.

202001111121204 is an abundant number, since it is smaller than the sum of its proper divisors (318247033563792).

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

202001111121204 is a wasteful number, since it uses less digits than its factorization.

202001111121204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105870603376 (or 105870603371 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 202001111121204 its reverse (402121111100202), we get a palindrome (604122222221406).

The spelling of 202001111121204 in words is "two hundred two trillion, one billion, one hundred eleven million, one hundred twenty-one thousand, two hundred four".