2120221111101 has 16 divisors (see below), whose sum is σ = 2916385457664. Its totient is φ = 1369111374144.

The previous prime is 2120221111091. The next prime is 2120221111117. The reversal of 2120221111101 is 1011111220212.

It is a happy number.

It is not a de Polignac number, because 2120221111101 - 2¹⁵ = 2120221078333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120221119101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42802806 + ... + 42852311.

It is an arithmetic number, because the mean of its divisors is an integer number (182274091104).

Almost surely, 2^{2120221111101} is an apocalyptic number.

It is an amenable number.

2120221111101 is a deficient number, since it is larger than the sum of its proper divisors (796164346563).

2120221111101 is a wasteful number, since it uses less digits than its factorization.

2120221111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85655380.

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

Adding to 2120221111101 its reverse (1011111220212), we get a palindrome (3131332331313).

It can be divided in two parts, 2120221 and 111101, that added together give a palindrome (2231322).

The spelling of 2120221111101 in words is "two trillion, one hundred twenty billion, two hundred twenty-one million, one hundred eleven thousand, one hundred one".