221810147145102 has 8 divisors (see below), whose sum is σ = 443620294290216. Its totient is φ = 73936715715032.

The previous prime is 221810147145073. The next prime is 221810147145113. The reversal of 221810147145102 is 201541741018122.

221810147145102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

221810147145102 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18484178928753 + ... + 18484178928764.

It is an arithmetic number, because the mean of its divisors is an integer number (55452536786277).

Almost surely, 2^{221810147145102} is an apocalyptic number.

221810147145102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221810147145102 is a wasteful number, since it uses less digits than its factorization.

221810147145102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36968357857522.

The product of its (nonzero) digits is 35840, while the sum is 39.

The spelling of 221810147145102 in words is "two hundred twenty-one trillion, eight hundred ten billion, one hundred forty-seven million, one hundred forty-five thousand, one hundred two".