1221011030202 has 8 divisors (see below), whose sum is σ = 2442022060416. Its totient is φ = 407003676732.

The previous prime is 1221011030201. The next prime is 1221011030207. The reversal of 1221011030202 is 2020301101221.

It is a sphenic number, since it is the product of 3 distinct primes.

1221011030202 is an admirable number.

It is a super-4 number, since 4×1221011030202⁴ (a number of 49 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1221011030201) 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, 101750919178 + ... + 101750919189.

It is an arithmetic number, because the mean of its divisors is an integer number (305252757552).

Almost surely, 2^{1221011030202} is an apocalyptic number.

1221011030202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1221011030202 is a wasteful number, since it uses less digits than its factorization.

1221011030202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203501838372.

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

Adding to 1221011030202 its reverse (2020301101221), we get a palindrome (3241312131423).

The spelling of 1221011030202 in words is "one trillion, two hundred twenty-one billion, eleven million, thirty thousand, two hundred two".