2120011211206 has 24 divisors (see below), whose sum is σ = 3755322395280. Its totient is φ = 879267317040.

The previous prime is 2120011211177. The next prime is 2120011211207. The reversal of 2120011211206 is 6021121100212.

It is a super-2 number, since 2×2120011211206² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120011211207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78773941 + ... + 78800848.

It is an arithmetic number, because the mean of its divisors is an integer number (156471766470).

Almost surely, 2^{2120011211206} is an apocalyptic number.

2120011211206 is a deficient number, since it is larger than the sum of its proper divisors (1635311184074).

2120011211206 is a wasteful number, since it uses less digits than its factorization.

2120011211206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157574860 (or 157574829 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 2120011211206 its reverse (6021121100212), we get a palindrome (8141132311418).

The spelling of 2120011211206 in words is "two trillion, one hundred twenty billion, eleven million, two hundred eleven thousand, two hundred six".