121123211310 has 48 divisors (see below), whose sum is σ = 315095629680. Its totient is φ = 32281545600.

The previous prime is 121123211269. The next prime is 121123211323. The reversal of 121123211310 is 13112321121.

121123211310 is a `hidden beast` number, since 1 + 21 + 12 + 321 + 1 + 310 = 666.

It is a super-2 number, since 2×121123211310² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 211540 + ... + 535719.

It is an arithmetic number, because the mean of its divisors is an integer number (6564492285).

Almost surely, 2^121123211310 is an apocalyptic number.

121123211310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121123211310 is an abundant number, since it is smaller than the sum of its proper divisors (193972418370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121123211310 is a wasteful number, since it uses less digits than its factorization.

121123211310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749073 (or 749070 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 121123211310 its reverse (13112321121), we get a palindrome (134235532431).

The spelling of 121123211310 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred eleven thousand, three hundred ten".