1220230310121 has 12 divisors (see below), whose sum is σ = 1805544036660. Its totient is φ = 793645729920.

The previous prime is 1220230310113. The next prime is 1220230310137. The reversal of 1220230310121 is 1210130320221.

1220230310121 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 230 + 310 + 121 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16687472400 + 1203542837721 = 129180^2 + 1097061^2 .

It is not a de Polignac number, because 1220230310121 - 2³ = 1220230310113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220230310094 and 1220230310103.

It is not an unprimeable number, because it can be changed into a prime (1220230310171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1653428236 + ... + 1653428973.

It is an arithmetic number, because the mean of its divisors is an integer number (150462003055).

Almost surely, 2^{1220230310121} is an apocalyptic number.

It is an amenable number.

1220230310121 is a deficient number, since it is larger than the sum of its proper divisors (585313726539).

1220230310121 is a wasteful number, since it uses less digits than its factorization.

1220230310121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306857256 (or 3306857253 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1220230310121 its reverse (1210130320221), we get a palindrome (2430360630342).

It can be divided in two parts, 1220230 and 310121, that added together give a palindrome (1530351).

The spelling of 1220230310121 in words is "one trillion, two hundred twenty billion, two hundred thirty million, three hundred ten thousand, one hundred twenty-one".