1013121202 has 4 divisors (see below), whose sum is σ = 1519681806. Its totient is φ = 506560600.

The previous prime is 1013121163. The next prime is 1013121209. The reversal of 1013121202 is 2021213101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2021213101 = 61 ⋅33134641.

It can be written as a sum of positive squares in only one way, i.e., 994708521 + 18412681 = 31539^2 + 4291^2 .

It is not an unprimeable number, because it can be changed into a prime (1013121209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253280299 + ... + 253280302.

Almost surely, 2^1013121202 is an apocalyptic number.

1013121202 is a deficient number, since it is larger than the sum of its proper divisors (506560604).

1013121202 is an equidigital number, since it uses as much as digits as its factorization.

1013121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506560603.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1013121202 is about 31829.5649043464. The cubic root of 1013121202 is about 1004.3547426886.

Adding to 1013121202 its reverse (2021213101), we get a palindrome (3034334303).

The spelling of 1013121202 in words is "one billion, thirteen million, one hundred twenty-one thousand, two hundred two".