7221092461 has 4 divisors (see below), whose sum is σ = 7877555424. Its totient is φ = 6564629500.

The previous prime is 7221092453. The next prime is 7221092467. The reversal of 7221092461 is 1642901227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7221092461 - 2³ = 7221092453 is a prime.

It is a super-2 number, since 2×7221092461² (a number of 21 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 (7221092467) 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, 328231465 + ... + 328231486.

It is an arithmetic number, because the mean of its divisors is an integer number (1969388856).

Almost surely, 2^7221092461 is an apocalyptic number.

It is an amenable number.

7221092461 is a deficient number, since it is larger than the sum of its proper divisors (656462963).

7221092461 is a wasteful number, since it uses less digits than its factorization.

7221092461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656462962.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 7221092461 is about 84977.0113677811. The cubic root of 7221092461 is about 1932.8625371237.

Adding to 7221092461 its reverse (1642901227), we get a palindrome (8863993688).

The spelling of 7221092461 in words is "seven billion, two hundred twenty-one million, ninety-two thousand, four hundred sixty-one".