201010111021021 has 8 divisors (see below), whose sum is σ = 201146190462720. Its totient is φ = 200874036958272.

The previous prime is 201010111021007. The next prime is 201010111021117. The reversal of 201010111021021 is 120120111010102.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201010111021021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201010111020992 and 201010111021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201010111021001) 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, 74881300 + ... + 77519218.

It is an arithmetic number, because the mean of its divisors is an integer number (25143273807840).

Almost surely, 2^{201010111021021} is an apocalyptic number.

It is an amenable number.

201010111021021 is a deficient number, since it is larger than the sum of its proper divisors (136079441699).

201010111021021 is a wasteful number, since it uses less digits than its factorization.

201010111021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689475.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 201010111021021 its reverse (120120111010102), we get a palindrome (321130222031123).

The spelling of 201010111021021 in words is "two hundred one trillion, ten billion, one hundred eleven million, twenty-one thousand, twenty-one".