2000102111221 has 4 divisors (see below), whose sum is σ = 2004478702732. Its totient is φ = 1995725519712.

The previous prime is 2000102111191. The next prime is 2000102111237. The reversal of 2000102111221 is 1221112010002.

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 1161137708721 + 838964402500 = 1077561^2 + 915950^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000102111221 - 2¹⁵ = 2000102078453 is a prime.

It is a super-2 number, since 2×2000102111221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000102111291) 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, 2188295070 + ... + 2188295983.

It is an arithmetic number, because the mean of its divisors is an integer number (501119675683).

Almost surely, 2^{2000102111221} is an apocalyptic number.

It is an amenable number.

2000102111221 is a deficient number, since it is larger than the sum of its proper divisors (4376591511).

2000102111221 is an equidigital number, since it uses as much as digits as its factorization.

2000102111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376591510.

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

Adding to 2000102111221 its reverse (1221112010002), we get a palindrome (3221214121223).

The spelling of 2000102111221 in words is "two trillion, one hundred two million, one hundred eleven thousand, two hundred twenty-one".