2120555706101 has 4 divisors (see below), whose sum is σ = 2423492235552. Its totient is φ = 1817619176652.

The previous prime is 2120555705971. The next prime is 2120555706169. The reversal of 2120555706101 is 1016075550212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2120555706101 - 2¹⁴ = 2120555689717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120555706901) 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, 151468264715 + ... + 151468264728.

It is an arithmetic number, because the mean of its divisors is an integer number (605873058888).

Almost surely, 2^{2120555706101} is an apocalyptic number.

It is an amenable number.

2120555706101 is a deficient number, since it is larger than the sum of its proper divisors (302936529451).

2120555706101 is an equidigital number, since it uses as much as digits as its factorization.

2120555706101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302936529450.

The product of its (nonzero) digits is 21000, while the sum is 35.

The spelling of 2120555706101 in words is "two trillion, one hundred twenty billion, five hundred fifty-five million, seven hundred six thousand, one hundred one".