1020435436121 has 4 divisors (see below), whose sum is σ = 1022022428112. Its totient is φ = 1018848444132.

The previous prime is 1020435436109. The next prime is 1020435436133. The reversal of 1020435436121 is 1216345340201.

1020435436121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (1020435436109) and next prime (1020435436133).

It is a cyclic number.

It is not a de Polignac number, because 1020435436121 - 2¹⁴ = 1020435419737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020435436021) 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, 793495031 + ... + 793496316.

It is an arithmetic number, because the mean of its divisors is an integer number (255505607028).

Almost surely, 2^{1020435436121} is an apocalyptic number.

It is an amenable number.

1020435436121 is a deficient number, since it is larger than the sum of its proper divisors (1586991991).

1020435436121 is an equidigital number, since it uses as much as digits as its factorization.

1020435436121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586991990.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 1020435436121 in words is "one trillion, twenty billion, four hundred thirty-five million, four hundred thirty-six thousand, one hundred twenty-one".