111020211021201 has 4 divisors (see below), whose sum is σ = 148026948028272. Its totient is φ = 74013474014132.

The previous prime is 111020211021197. The next prime is 111020211021257. The reversal of 111020211021201 is 102120112020111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111020211021201 - 2² = 111020211021197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111020211021281) 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, 18503368503531 + ... + 18503368503536.

It is an arithmetic number, because the mean of its divisors is an integer number (37006737007068).

Almost surely, 2^{111020211021201} is an apocalyptic number.

It is an amenable number.

111020211021201 is a deficient number, since it is larger than the sum of its proper divisors (37006737007071).

111020211021201 is an equidigital number, since it uses as much as digits as its factorization.

111020211021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37006737007070.

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

Adding to 111020211021201 its reverse (102120112020111), we get a palindrome (213140323041312).

The spelling of 111020211021201 in words is "one hundred eleven trillion, twenty billion, two hundred eleven million, twenty-one thousand, two hundred one".