1012302021121 has 4 divisors (see below), whose sum is σ = 1071849198852. Its totient is φ = 952754843392.

The previous prime is 1012302021113. The next prime is 1012302021131. The reversal of 1012302021121 is 1211202032101.

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 553106051521 + 459195969600 = 743711^2 + 677640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012302021121 - 2³ = 1012302021113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012302021095 and 1012302021104.

It is not an unprimeable number, because it can be changed into a prime (1012302021131) 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, 29773588840 + ... + 29773588873.

It is an arithmetic number, because the mean of its divisors is an integer number (267962299713).

Almost surely, 2^{1012302021121} is an apocalyptic number.

It is an amenable number.

1012302021121 is a deficient number, since it is larger than the sum of its proper divisors (59547177731).

1012302021121 is an equidigital number, since it uses as much as digits as its factorization.

1012302021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59547177730.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1012302021121 its reverse (1211202032101), we get a palindrome (2223504053222).

The spelling of 1012302021121 in words is "one trillion, twelve billion, three hundred two million, twenty-one thousand, one hundred twenty-one".