2211111220101 has 8 divisors (see below), whose sum is σ = 3369312335424. Its totient is φ = 1263492125760.

The previous prime is 2211111220081. The next prime is 2211111220127. The reversal of 2211111220101 is 1010221111122.

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 2211111220101 - 2⁵ = 2211111220069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211111220501) 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, 52645505220 + ... + 52645505261.

It is an arithmetic number, because the mean of its divisors is an integer number (421164041928).

Almost surely, 2^{2211111220101} is an apocalyptic number.

2211111220101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2211111220101 is a deficient number, since it is larger than the sum of its proper divisors (1158201115323).

2211111220101 is a wasteful number, since it uses less digits than its factorization.

2211111220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105291010491.

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

Adding to 2211111220101 its reverse (1010221111122), we get a palindrome (3221332331223).

The spelling of 2211111220101 in words is "two trillion, two hundred eleven billion, one hundred eleven million, two hundred twenty thousand, one hundred one".