11020111021221 has 8 divisors (see below), whose sum is σ = 14696625716160. Its totient is φ = 7345168503552.

The previous prime is 11020111021151. The next prime is 11020111021259. The reversal of 11020111021221 is 12212011102011.

It is a happy number.

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

It is not a de Polignac number, because 11020111021221 - 2²⁶ = 11020043912357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11020111021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020111041221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393027961 + ... + 393055998.

It is an arithmetic number, because the mean of its divisors is an integer number (1837078214520).

Almost surely, 2^{11020111021221} is an apocalyptic number.

It is an amenable number.

11020111021221 is a deficient number, since it is larger than the sum of its proper divisors (3676514694939).

11020111021221 is an equidigital number, since it uses as much as digits as its factorization.

11020111021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786088635.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11020111021221 its reverse (12212011102011), we get a palindrome (23232122123232).

The spelling of 11020111021221 in words is "eleven trillion, twenty billion, one hundred eleven million, twenty-one thousand, two hundred twenty-one".