121123210130 has 16 divisors (see below), whose sum is σ = 234792684504. Its totient is φ = 44722416000.

The previous prime is 121123210129. The next prime is 121123210141. The reversal of 121123210130 is 31012321121.

It can be written as a sum of positive squares in 4 ways, for example, as 106375779409 + 14747430721 = 326153^2 + 121439^2 .

It is a super-2 number, since 2×121123210130² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121123210099 and 121123210108.

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, 465858371 + ... + 465858630.

Almost surely, 2^121123210130 is an apocalyptic number.

121123210130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121123210130 is a deficient number, since it is larger than the sum of its proper divisors (113669474374).

121123210130 is a wasteful number, since it uses less digits than its factorization.

121123210130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931717021.

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

Adding to 121123210130 its reverse (31012321121), we get a palindrome (152135531251).

The spelling of 121123210130 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred ten thousand, one hundred thirty".