1200221021013 has 16 divisors (see below), whose sum is σ = 1828924907520. Its totient is φ = 685834326576.

The previous prime is 1200221020979. The next prime is 1200221021063. The reversal of 1200221021013 is 3101201220021.

It is a de Polignac number, because none of the positive numbers 2^k-1200221021013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200221020983 and 1200221021001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200221021063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3108756 + ... + 3473442.

It is an arithmetic number, because the mean of its divisors is an integer number (114307806720).

Almost surely, 2^{1200221021013} is an apocalyptic number.

It is an amenable number.

1200221021013 is a deficient number, since it is larger than the sum of its proper divisors (628703886507).

1200221021013 is a wasteful number, since it uses less digits than its factorization.

1200221021013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521416.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1200221021013 its reverse (3101201220021), we get a palindrome (4301422241034).

The spelling of 1200221021013 in words is "one trillion, two hundred billion, two hundred twenty-one million, twenty-one thousand, thirteen".