1202012011221 has 64 divisors (see below), whose sum is σ = 1876775878656. Its totient is φ = 670037472000.

The previous prime is 1202012011219. The next prime is 1202012011223. The reversal of 1202012011221 is 1221102102021.

It is an interprime number because it is at equal distance from previous prime (1202012011219) and next prime (1202012011223).

It is not a de Polignac number, because 1202012011221 - 2¹ = 1202012011219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1202012011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202012011223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 645894831 + ... + 645896691.

It is an arithmetic number, because the mean of its divisors is an integer number (29324623104).

Almost surely, 2^{1202012011221} is an apocalyptic number.

It is an amenable number.

1202012011221 is a deficient number, since it is larger than the sum of its proper divisors (674763867435).

1202012011221 is a wasteful number, since it uses less digits than its factorization.

1202012011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1202012011221 its reverse (1221102102021), we get a palindrome (2423114113242).

The spelling of 1202012011221 in words is "one trillion, two hundred two billion, twelve million, eleven thousand, two hundred twenty-one".