121223122130 has 96 divisors (see below), whose sum is σ = 253708120512. Its totient is φ = 41349657600.

The previous prime is 121223122127. The next prime is 121223122133. The reversal of 121223122130 is 31221322121.

It is an interprime number because it is at equal distance from previous prime (121223122127) and next prime (121223122133).

It is not an unprimeable number, because it can be changed into a prime (121223122133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9753320 + ... + 9765740.

It is an arithmetic number, because the mean of its divisors is an integer number (2642792922).

Almost surely, 2^121223122130 is an apocalyptic number.

121223122130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121223122130 is an abundant number, since it is smaller than the sum of its proper divisors (132484998382).

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

121223122130 is a wasteful number, since it uses less digits than its factorization.

121223122130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12780 (or 12763 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121223122130 its reverse (31221322121), we get a palindrome (152444444251).

Subtracting from 121223122130 its reverse (31221322121), we obtain a square (90001800009 = 300003²).

The spelling of 121223122130 in words is "one hundred twenty-one billion, two hundred twenty-three million, one hundred twenty-two thousand, one hundred thirty".