1202121331 has 2 divisors, whose sum is σ = 1202121332. Its totient is φ = 1202121330.

The previous prime is 1202121329. The next prime is 1202121341. The reversal of 1202121331 is 1331212021.

It is a weak prime.

It is an emirp because it is prime and its reverse (1331212021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1202121331 - 2¹ = 1202121329 is a prime.

It is a super-2 number, since 2×1202121331² = 2890191388890423122, which contains 22 as substring.

Together with 1202121329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1202121341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601060665 + 601060666.

It is an arithmetic number, because the mean of its divisors is an integer number (601060666).

Almost surely, 2^1202121331 is an apocalyptic number.

1202121331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202121331 is an equidigital number, since it uses as much as digits as its factorization.

1202121331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1202121331 is about 34671.6214071393. The cubic root of 1202121331 is about 1063.2843812747.

Adding to 1202121331 its reverse (1331212021), we get a palindrome (2533333352).

The spelling of 1202121331 in words is "one billion, two hundred two million, one hundred twenty-one thousand, three hundred thirty-one".