1941004292221 has 4 divisors (see below), whose sum is σ = 1941008581372. Its totient is φ = 1941000003072.

The previous prime is 1941004292219. The next prime is 1941004292237. The reversal of 1941004292221 is 1222924001491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1262283708196 + 678720584025 = 1123514^2 + 823845^2 .

It is a cyclic number.

It is not a de Polignac number, because 1941004292221 - 2¹ = 1941004292219 is a prime.

It is a super-2 number, since 2×1941004292221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1941004292251) 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, 1373310 + ... + 2401663.

It is an arithmetic number, because the mean of its divisors is an integer number (485252145343).

Almost surely, 2^{1941004292221} is an apocalyptic number.

It is an amenable number.

1941004292221 is a deficient number, since it is larger than the sum of its proper divisors (4289151).

1941004292221 is an equidigital number, since it uses as much as digits as its factorization.

1941004292221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4289150.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 1941004292221 in words is "one trillion, nine hundred forty-one billion, four million, two hundred ninety-two thousand, two hundred twenty-one".