121101101210210 has 64 divisors (see below), whose sum is σ = 240785144812800. Its totient is φ = 43485708779520.

The previous prime is 121101101210189. The next prime is 121101101210251. The reversal of 121101101210210 is 12012101101121.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7848014 + ... + 17429673.

It is an arithmetic number, because the mean of its divisors is an integer number (3762267887700).

Almost surely, 2^{121101101210210} is an apocalyptic number.

121101101210210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121101101210210 is a deficient number, since it is larger than the sum of its proper divisors (119684043602590).

121101101210210 is a wasteful number, since it uses less digits than its factorization.

121101101210210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25278251.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121101101210210 its reverse (12012101101121), we get a palindrome (133113202311331).

The spelling of 121101101210210 in words is "one hundred twenty-one trillion, one hundred one billion, one hundred one million, two hundred ten thousand, two hundred ten".