1230122010021 has 4 divisors (see below), whose sum is σ = 1640162680032. Its totient is φ = 820081340012.

The previous prime is 1230122009993. The next prime is 1230122010043. The reversal of 1230122010021 is 1200102210321.

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 1230122010021 - 2⁹ = 1230122009509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230122010071) 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, 205020335001 + ... + 205020335006.

It is an arithmetic number, because the mean of its divisors is an integer number (410040670008).

Almost surely, 2^{1230122010021} is an apocalyptic number.

It is an amenable number.

1230122010021 is a deficient number, since it is larger than the sum of its proper divisors (410040670011).

1230122010021 is an equidigital number, since it uses as much as digits as its factorization.

1230122010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410040670010.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1230122010021 its reverse (1200102210321), we get a palindrome (2430224220342).

The spelling of 1230122010021 in words is "one trillion, two hundred thirty billion, one hundred twenty-two million, ten thousand, twenty-one".