221534404156274 has 16 divisors (see below), whose sum is σ = 362630208056256. Its totient is φ = 100664299520400.

The previous prime is 221534404156259. The next prime is 221534404156297. The reversal of 221534404156274 is 472651404435122.

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, 1657777382 + ... + 1657911009.

It is an arithmetic number, because the mean of its divisors is an integer number (22664388003516).

Almost surely, 2^{221534404156274} is an apocalyptic number.

221534404156274 is a deficient number, since it is larger than the sum of its proper divisors (141095803899982).

221534404156274 is a wasteful number, since it uses less digits than its factorization.

221534404156274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315691441.

The product of its (nonzero) digits is 6451200, while the sum is 50.

The spelling of 221534404156274 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred four million, one hundred fifty-six thousand, two hundred seventy-four".