201010102001021 has 8 divisors (see below), whose sum is σ = 203668697882880. Its totient is φ = 198354360224592.

The previous prime is 201010102001003. The next prime is 201010102001039. The reversal of 201010102001021 is 120100201010102.

It is an interprime number because it is at equal distance from previous prime (201010102001003) and next prime (201010102001039).

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-201010102001021 is a prime.

It is a super-2 number, since 2×201010102001021² (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 = 201010102000993 and 201010102001011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201010102004021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713384570 + ... + 713666283.

It is an arithmetic number, because the mean of its divisors is an integer number (25458587235360).

Almost surely, 2^{201010102001021} is an apocalyptic number.

It is an amenable number.

201010102001021 is a deficient number, since it is larger than the sum of its proper divisors (2658595881859).

201010102001021 is a wasteful number, since it uses less digits than its factorization.

201010102001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427052715.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201010102001021 its reverse (120100201010102), we get a palindrome (321110303011123).

The spelling of 201010102001021 in words is "two hundred one trillion, ten billion, one hundred two million, one thousand, twenty-one".