121221223122130 has 32 divisors (see below), whose sum is σ = 222455409842880. Its totient is φ = 47546583226560.

The previous prime is 121221223122091. The next prime is 121221223122137. The reversal of 121221223122130 is 31221322122121.

It is a junction number, because it is equal to n+sod(n) for n = 121221223122095 and 121221223122104.

It is not an unprimeable number, because it can be changed into a prime (121221223122137) by changing a digit.

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, 258531136 + ... + 258999595.

It is an arithmetic number, because the mean of its divisors is an integer number (6951731557590).

Almost surely, 2^{121221223122130} is an apocalyptic number.

121221223122130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121221223122130 is a deficient number, since it is larger than the sum of its proper divisors (101234186720750).

121221223122130 is a wasteful number, since it uses less digits than its factorization.

121221223122130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517531194.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 121221223122130 its reverse (31221322122121), we get a palindrome (152442545244251).

The spelling of 121221223122130 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two hundred twenty-three million, one hundred twenty-two thousand, one hundred thirty".