1022121010013 has 4 divisors (see below), whose sum is σ = 1023122108988. Its totient is φ = 1021119911040.

The previous prime is 1022121009967. The next prime is 1022121010019. The reversal of 1022121010013 is 3100101212201.

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 341385455524 + 680735554489 = 584282^2 + 825067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022121010013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1022121010013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022121010019) 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, 500547956 + ... + 500549997.

It is an arithmetic number, because the mean of its divisors is an integer number (255780527247).

Almost surely, 2^{1022121010013} is an apocalyptic number.

It is an amenable number.

1022121010013 is a deficient number, since it is larger than the sum of its proper divisors (1001098975).

1022121010013 is a wasteful number, since it uses less digits than its factorization.

1022121010013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001098974.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1022121010013 its reverse (3100101212201), we get a palindrome (4122222222214).

The spelling of 1022121010013 in words is "one trillion, twenty-two billion, one hundred twenty-one million, ten thousand, thirteen".