1202140313021 has 4 divisors (see below), whose sum is σ = 1202155695132. Its totient is φ = 1202124930912.

The previous prime is 1202140312957. The next prime is 1202140313027. The reversal of 1202140313021 is 1203130412021.

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 591882496921 + 610257816100 = 769339^2 + 781190^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202140313021 - 2⁶ = 1202140312957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1202140312984 and 1202140313002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202140313027) 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, 7573226 + ... + 7730331.

It is an arithmetic number, because the mean of its divisors is an integer number (300538923783).

Almost surely, 2^{1202140313021} is an apocalyptic number.

It is an amenable number.

1202140313021 is a deficient number, since it is larger than the sum of its proper divisors (15382111).

1202140313021 is an equidigital number, since it uses as much as digits as its factorization.

1202140313021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15382110.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1202140313021 its reverse (1203130412021), we get a palindrome (2405270725042).

The spelling of 1202140313021 in words is "one trillion, two hundred two billion, one hundred forty million, three hundred thirteen thousand, twenty-one".