1222011011101 has 4 divisors (see below), whose sum is σ = 1293894011772. Its totient is φ = 1150128010432.

The previous prime is 1222011011093. The next prime is 1222011011129. The reversal of 1222011011101 is 1011101102221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1037802663076 + 184208348025 = 1018726^2 + 429195^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222011011101 - 2³ = 1222011011093 is a prime.

It is a super-2 number, since 2×1222011011101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222011011131) 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, 35941500310 + ... + 35941500343.

It is an arithmetic number, because the mean of its divisors is an integer number (323473502943).

Almost surely, 2^{1222011011101} is an apocalyptic number.

It is an amenable number.

1222011011101 is a deficient number, since it is larger than the sum of its proper divisors (71883000671).

1222011011101 is an equidigital number, since it uses as much as digits as its factorization.

1222011011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71883000670.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1222011011101 its reverse (1011101102221), we get a palindrome (2233112113322).

The spelling of 1222011011101 in words is "one trillion, two hundred twenty-two billion, eleven million, eleven thousand, one hundred one".