21210202110110 has 32 divisors (see below), whose sum is σ = 41147207448480. Its totient is φ = 7825355157888.

The previous prime is 21210202110109. The next prime is 21210202110137. The reversal of 21210202110110 is 1101120201212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63416765 + ... + 63750344.

It is an arithmetic number, because the mean of its divisors is an integer number (1285850232765).

Almost surely, 2^{21210202110110} is an apocalyptic number.

21210202110110 is a deficient number, since it is larger than the sum of its proper divisors (19937005338370).

21210202110110 is a wasteful number, since it uses less digits than its factorization.

21210202110110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127168412.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21210202110110 its reverse (1101120201212), we get a palindrome (22311322311322).

The spelling of 21210202110110 in words is "twenty-one trillion, two hundred ten billion, two hundred two million, one hundred ten thousand, one hundred ten".