2101555485012 has 12 divisors (see below), whose sum is σ = 4903629465056. Its totient is φ = 700518495000.

The previous prime is 2101555484957. The next prime is 2101555485017. The reversal of 2101555485012 is 2105845551012.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101555485017) 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, 87564811864 + ... + 87564811887.

Almost surely, 2^{2101555485012} is an apocalyptic number.

It is an amenable number.

2101555485012 is an abundant number, since it is smaller than the sum of its proper divisors (2802073980044).

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

2101555485012 is a wasteful number, since it uses less digits than its factorization.

2101555485012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175129623758 (or 175129623756 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 39.

The spelling of 2101555485012 in words is "two trillion, one hundred one billion, five hundred fifty-five million, four hundred eighty-five thousand, twelve".