1021121313033 has 4 divisors (see below), whose sum is σ = 1361495084048. Its totient is φ = 680747542020.

The previous prime is 1021121313029. The next prime is 1021121313059. The reversal of 1021121313033 is 3303131211201.

It is a happy number.

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 not a de Polignac number, because 1021121313033 - 2² = 1021121313029 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021121312033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170186885503 + ... + 170186885508.

It is an arithmetic number, because the mean of its divisors is an integer number (340373771012).

Almost surely, 2^{1021121313033} is an apocalyptic number.

It is an amenable number.

1021121313033 is a deficient number, since it is larger than the sum of its proper divisors (340373771015).

1021121313033 is an equidigital number, since it uses as much as digits as its factorization.

1021121313033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340373771014.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1021121313033 its reverse (3303131211201), we get a palindrome (4324252524234).

The spelling of 1021121313033 in words is "one trillion, twenty-one billion, one hundred twenty-one million, three hundred thirteen thousand, thirty-three".