1234172095221 has 16 divisors (see below), whose sum is σ = 1772164489536. Its totient is φ = 759481973376.

The previous prime is 1234172095217. The next prime is 1234172095223. The reversal of 1234172095221 is 1225902714321.

It is not a de Polignac number, because 1234172095221 - 2² = 1234172095217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1234172095221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234172095223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6551281 + ... + 6737033.

It is an arithmetic number, because the mean of its divisors is an integer number (110760280596).

Almost surely, 2^{1234172095221} is an apocalyptic number.

It is an amenable number.

1234172095221 is a deficient number, since it is larger than the sum of its proper divisors (537992394315).

1234172095221 is a wasteful number, since it uses less digits than its factorization.

1234172095221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356132.

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 1234172095221 in words is "one trillion, two hundred thirty-four billion, one hundred seventy-two million, ninety-five thousand, two hundred twenty-one".