1032123111221 has 4 divisors (see below), whose sum is σ = 1041592130700. Its totient is φ = 1022654091744.

The previous prime is 1032123111191. The next prime is 1032123111287. The reversal of 1032123111221 is 1221113212301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 747835800625 + 284287310596 = 864775^2 + 533186^2 .

It is a cyclic number.

It is not a de Polignac number, because 1032123111221 - 2⁶ = 1032123111157 is a prime.

It is a super-2 number, since 2×1032123111221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1032123111193 and 1032123111202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1032123111521) 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, 4734509576 + ... + 4734509793.

It is an arithmetic number, because the mean of its divisors is an integer number (260398032675).

Almost surely, 2^{1032123111221} is an apocalyptic number.

It is an amenable number.

1032123111221 is a deficient number, since it is larger than the sum of its proper divisors (9469019479).

1032123111221 is an equidigital number, since it uses as much as digits as its factorization.

1032123111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9469019478.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1032123111221 its reverse (1221113212301), we get a palindrome (2253236323522).

The spelling of 1032123111221 in words is "one trillion, thirty-two billion, one hundred twenty-three million, one hundred eleven thousand, two hundred twenty-one".