200101101021 has 24 divisors (see below), whose sum is σ = 289350821760. Its totient is φ = 133255038816.

The previous prime is 200101101001. The next prime is 200101101041. The reversal of 200101101021 is 120101101002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (200101101001) and next prime (200101101041).

It is not a de Polignac number, because 200101101021 - 2⁵ = 200101100989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 200101100994 and 200101101012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200101101001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52012920 + ... + 52016766.

It is an arithmetic number, because the mean of its divisors is an integer number (12056284240).

Almost surely, 2^200101101021 is an apocalyptic number.

It is an amenable number.

200101101021 is a deficient number, since it is larger than the sum of its proper divisors (89249720739).

200101101021 is a wasteful number, since it uses less digits than its factorization.

200101101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8665 (or 8662 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 200101101021 its reverse (120101101002), we get a palindrome (320202202023).

The spelling of 200101101021 in words is "two hundred billion, one hundred one million, one hundred one thousand, twenty-one".