21010102112110 has 32 divisors (see below), whose sum is σ = 37842237058752. Its totient is φ = 8398696515840.

The previous prime is 21010102112107. The next prime is 21010102112117. The reversal of 21010102112110 is 1121120101012.

It is a happy number.

It is a super-2 number, since 2×21010102112110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010102112117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232436884 + ... + 232527256.

It is an arithmetic number, because the mean of its divisors is an integer number (1182569908086).

Almost surely, 2^{21010102112110} is an apocalyptic number.

21010102112110 is a deficient number, since it is larger than the sum of its proper divisors (16832134946642).

21010102112110 is a wasteful number, since it uses less digits than its factorization.

21010102112110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104908.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21010102112110 its reverse (1121120101012), we get a palindrome (22131222213122).

The spelling of 21010102112110 in words is "twenty-one trillion, ten billion, one hundred two million, one hundred twelve thousand, one hundred ten".