211003020102101 has 4 divisors (see below), whose sum is σ = 211139238967500. Its totient is φ = 210866801236704.

The previous prime is 211003020102047. The next prime is 211003020102107. The reversal of 211003020102101 is 101201020300112.

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 127455632640625 + 83547387461476 = 11289625^2 + 9140426^2 .

It is a cyclic number.

It is not a de Polignac number, because 211003020102101 - 2¹⁸ = 211003019839957 is a prime.

It is a super-2 number, since 2×211003020102101² (a number of 29 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 (211003020102107) 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, 68109430376 + ... + 68109433473.

It is an arithmetic number, because the mean of its divisors is an integer number (52784809741875).

Almost surely, 2^{211003020102101} is an apocalyptic number.

It is an amenable number.

211003020102101 is a deficient number, since it is larger than the sum of its proper divisors (136218865399).

211003020102101 is a wasteful number, since it uses less digits than its factorization.

211003020102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136218865398.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 211003020102101 its reverse (101201020300112), we get a palindrome (312204040402213).

The spelling of 211003020102101 in words is "two hundred eleven trillion, three billion, twenty million, one hundred two thousand, one hundred one".