201120201010021 has 4 divisors (see below), whose sum is σ = 212950801069452. Its totient is φ = 189289600950592.

The previous prime is 201120201009979. The next prime is 201120201010067. The reversal of 201120201010021 is 120010102021102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105651961493796 + 95468239516225 = 10278714^2 + 9770785^2 .

It is a cyclic number.

It is not a de Polignac number, because 201120201010021 - 2¹³ = 201120201001829 is a prime.

It is a super-2 number, since 2×201120201010021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201120201009983 and 201120201010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201120201010121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5915300029690 + ... + 5915300029723.

It is an arithmetic number, because the mean of its divisors is an integer number (53237700267363).

Almost surely, 2^{201120201010021} is an apocalyptic number.

It is an amenable number.

201120201010021 is a deficient number, since it is larger than the sum of its proper divisors (11830600059431).

201120201010021 is a wasteful number, since it uses less digits than its factorization.

201120201010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11830600059430.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201120201010021 its reverse (120010102021102), we get a palindrome (321130303031123).

The spelling of 201120201010021 in words is "two hundred one trillion, one hundred twenty billion, two hundred one million, ten thousand, twenty-one".