1202121013 has 16 divisors (see below), whose sum is σ = 1323665280. Its totient is φ = 1086649344.

The previous prime is 1202121001. The next prime is 1202121023. The reversal of 1202121013 is 3101212021.

It is a cyclic number.

It is not a de Polignac number, because 1202121013 - 2⁵ = 1202120981 is a prime.

It is a super-2 number, since 2×1202121013² = 2890189859792292338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202120984 and 1202121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202121023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186045 + ... + 192397.

It is an arithmetic number, because the mean of its divisors is an integer number (82729080).

Almost surely, 2^1202121013 is an apocalyptic number.

It is an amenable number.

1202121013 is a deficient number, since it is larger than the sum of its proper divisors (121544267).

1202121013 is a wasteful number, since it uses less digits than its factorization.

1202121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6828.

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

The square root of 1202121013 is about 34671.6168212560. The cubic root of 1202121013 is about 1063.2842875170.

Adding to 1202121013 its reverse (3101212021), we get a palindrome (4303333034).

The spelling of 1202121013 in words is "one billion, two hundred two million, one hundred twenty-one thousand, thirteen".