201121052 has 24 divisors (see below), whose sum is σ = 387555840. Its totient is φ = 90562160.

The previous prime is 201121051. The next prime is 201121057. The reversal of 201121052 is 250121102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121051) 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, 16652 + ... + 26067.

It is an arithmetic number, because the mean of its divisors is an integer number (16148160).

Almost surely, 2^201121052 is an apocalyptic number.

201121052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

201121052 is a deficient number, since it is larger than the sum of its proper divisors (186434788).

201121052 is a wasteful number, since it uses less digits than its factorization.

201121052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42841 (or 42839 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 201121052 is about 14181.7154110495. The cubic root of 201121052 is about 585.8941710756.

Adding to 201121052 its reverse (250121102), we get a palindrome (451242154).

Subtracting 201121052 from its reverse (250121102), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 201121052 in words is "two hundred one million, one hundred twenty-one thousand, fifty-two".