1111220212101 has 8 divisors (see below), whose sum is σ = 1481640642624. Its totient is φ = 740806628160.

The previous prime is 1111220212087. The next prime is 1111220212103. The reversal of 1111220212101 is 1012120221111.

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 1111220212101 - 2¹⁴ = 1111220195717 is a prime.

It is a super-3 number, since 3×1111220212101³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111220212103) 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, 1320145 + ... + 1991286.

It is an arithmetic number, because the mean of its divisors is an integer number (185205080328).

Almost surely, 2^{1111220212101} is an apocalyptic number.

It is an amenable number.

1111220212101 is a deficient number, since it is larger than the sum of its proper divisors (370420430523).

1111220212101 is a wasteful number, since it uses less digits than its factorization.

1111220212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423291.

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

Adding to 1111220212101 its reverse (1012120221111), we get a palindrome (2123340433212).

The spelling of 1111220212101 in words is "one trillion, one hundred eleven billion, two hundred twenty million, two hundred twelve thousand, one hundred one".