21002002211110 has 16 divisors (see below), whose sum is σ = 37814818399632. Its totient is φ = 8398308791200.

The previous prime is 21002002211101. The next prime is 21002002211117. The reversal of 21002002211110 is 1111220020012.

It is a super-4 number, since 4×21002002211110⁴ (a number of 54 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002002211117) 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, 311476261 + ... + 311543680.

It is an arithmetic number, because the mean of its divisors is an integer number (2363426149977).

Almost surely, 2^{21002002211110} is an apocalyptic number.

21002002211110 is a deficient number, since it is larger than the sum of its proper divisors (16812816188522).

21002002211110 is a wasteful number, since it uses less digits than its factorization.

21002002211110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623023319.

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

Adding to 21002002211110 its reverse (1111220020012), we get a palindrome (22113222231122).

The spelling of 21002002211110 in words is "twenty-one trillion, two billion, two million, two hundred eleven thousand, one hundred ten".