2120911909206 has 16 divisors (see below), whose sum is σ = 4241875760064. Its totient is φ = 706961979464.

The previous prime is 2120911909157. The next prime is 2120911909313. The reversal of 2120911909206 is 6029091190212.

It is a super-2 number, since 2×2120911909206² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1623000 + ... + 2622203.

It is an arithmetic number, because the mean of its divisors is an integer number (265117235004).

Almost surely, 2^{2120911909206} is an apocalyptic number.

2120911909206 is an abundant number, since it is smaller than the sum of its proper divisors (2120963850858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2120911909206 is a wasteful number, since it uses less digits than its factorization.

2120911909206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328475.

The product of its (nonzero) digits is 34992, while the sum is 42.

The spelling of 2120911909206 in words is "two trillion, one hundred twenty billion, nine hundred eleven million, nine hundred nine thousand, two hundred six".