121231230110 has 16 divisors (see below), whose sum is σ = 231052462416. Its totient is φ = 45639992448.

The previous prime is 121231230103. The next prime is 121231230137. The reversal of 121231230110 is 11032132121.

It is a super-2 number, since 2×121231230110² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356562272 + ... + 356562611.

It is an arithmetic number, because the mean of its divisors is an integer number (14440778901).

Almost surely, 2^121231230110 is an apocalyptic number.

121231230110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121231230110 is a deficient number, since it is larger than the sum of its proper divisors (109821232306).

121231230110 is a wasteful number, since it uses less digits than its factorization.

121231230110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713124907.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121231230110 its reverse (11032132121), we get a palindrome (132263362231).

The spelling of 121231230110 in words is "one hundred twenty-one billion, two hundred thirty-one million, two hundred thirty thousand, one hundred ten".