111202120221 has 8 divisors (see below), whose sum is σ = 148297858944. Its totient is φ = 74120564160.

The previous prime is 111202120219. The next prime is 111202120283. The reversal of 111202120221 is 122021202111.

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

It is not a de Polignac number, because 111202120221 - 2¹ = 111202120219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111202120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111202120121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3527356 + ... + 3558741.

It is an arithmetic number, because the mean of its divisors is an integer number (18537232368).

Almost surely, 2^111202120221 is an apocalyptic number.

It is an amenable number.

111202120221 is a deficient number, since it is larger than the sum of its proper divisors (37095738723).

111202120221 is an equidigital number, since it uses as much as digits as its factorization.

111202120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091331.

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

Adding to 111202120221 its reverse (122021202111), we get a palindrome (233223322332).

The spelling of 111202120221 in words is "one hundred eleven billion, two hundred two million, one hundred twenty thousand, two hundred twenty-one".