121100210110 has 32 divisors (see below), whose sum is σ = 237820860000. Its totient is φ = 44031980160.

The previous prime is 121100210093. The next prime is 121100210137. The reversal of 121100210110 is 11012001121.

It is a super-2 number, since 2×121100210110² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1154116 + ... + 1254664.

It is an arithmetic number, because the mean of its divisors is an integer number (7431901875).

Almost surely, 2^121100210110 is an apocalyptic number.

121100210110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121100210110 is a deficient number, since it is larger than the sum of its proper divisors (116720649890).

121100210110 is a wasteful number, since it uses less digits than its factorization.

121100210110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111516.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121100210110 its reverse (11012001121), we get a palindrome (132112211231).

The spelling of 121100210110 in words is "one hundred twenty-one billion, one hundred million, two hundred ten thousand, one hundred ten".