1221230133121 has 8 divisors (see below), whose sum is σ = 1236088028160. Its totient is φ = 1206397487328.

The previous prime is 1221230133119. The next prime is 1221230133139. The reversal of 1221230133121 is 1213310321221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1221230133121 - 2¹ = 1221230133119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1221230133092 and 1221230133101.

It is not an unprimeable number, because it can be changed into a prime (1221230133161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6214981 + ... + 6408466.

It is an arithmetic number, because the mean of its divisors is an integer number (154511003520).

Almost surely, 2^{1221230133121} is an apocalyptic number.

It is an amenable number.

1221230133121 is a deficient number, since it is larger than the sum of its proper divisors (14857895039).

1221230133121 is a wasteful number, since it uses less digits than its factorization.

1221230133121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12624623.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1221230133121 its reverse (1213310321221), we get a palindrome (2434540454342).

The spelling of 1221230133121 in words is "one trillion, two hundred twenty-one billion, two hundred thirty million, one hundred thirty-three thousand, one hundred twenty-one".