121020001312 has 48 divisors (see below), whose sum is σ = 272331182592. Its totient is φ = 51858823680.

The previous prime is 121020001273. The next prime is 121020001321. The reversal of 121020001312 is 213100020121.

It is a junction number, because it is equal to n+sod(n) for n = 121020001292 and 121020001301.

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, 1882012 + ... + 1945252.

It is an arithmetic number, because the mean of its divisors is an integer number (5673566304).

Almost surely, 2^121020001312 is an apocalyptic number.

It is an amenable number.

121020001312 is an abundant number, since it is smaller than the sum of its proper divisors (151311181280).

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

121020001312 is an equidigital number, since it uses as much as digits as its factorization.

121020001312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71801 (or 71793 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121020001312 its reverse (213100020121), we get a palindrome (334120021433).

The spelling of 121020001312 in words is "one hundred twenty-one billion, twenty million, one thousand, three hundred twelve".