121101121121210 has 16 divisors (see below), whose sum is σ = 217983018585600. Its totient is φ = 48440226100176.

The previous prime is 121101121121209. The next prime is 121101121121213. The reversal of 121101121121210 is 12121121101121.

It is not an unprimeable number, because it can be changed into a prime (121101121121213) 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, 25496990 + ... + 29871369.

It is an arithmetic number, because the mean of its divisors is an integer number (13623938661600).

Almost surely, 2^{121101121121210} is an apocalyptic number.

121101121121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121101121121210 is a deficient number, since it is larger than the sum of its proper divisors (96881897464390).

121101121121210 is a wasteful number, since it uses less digits than its factorization.

121101121121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55587085.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121101121121210 its reverse (12121121101121), we get a palindrome (133222242222331).

The spelling of 121101121121210 in words is "one hundred twenty-one trillion, one hundred one billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred ten".