1230021132121 has 4 divisors (see below), whose sum is σ = 1239410606544. Its totient is φ = 1220631657700.

The previous prime is 1230021132107. The next prime is 1230021132173. The reversal of 1230021132121 is 1212311200321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1230021132121 - 2⁵ = 1230021132089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230021132181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4694737015 + ... + 4694737276.

It is an arithmetic number, because the mean of its divisors is an integer number (309852651636).

Almost surely, 2^{1230021132121} is an apocalyptic number.

It is an amenable number.

1230021132121 is a deficient number, since it is larger than the sum of its proper divisors (9389474423).

1230021132121 is an equidigital number, since it uses as much as digits as its factorization.

1230021132121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9389474422.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1230021132121 its reverse (1212311200321), we get a palindrome (2442332332442).

The spelling of 1230021132121 in words is "one trillion, two hundred thirty billion, twenty-one million, one hundred thirty-two thousand, one hundred twenty-one".