7229107690421 has 2 divisors, whose sum is σ = 7229107690422. Its totient is φ = 7229107690420.

The previous prime is 7229107690397. The next prime is 7229107690439. The reversal of 7229107690421 is 1240967019227.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7125963302500 + 103144387921 = 2669450^2 + 321161^2 .

It is a cyclic number.

It is not a de Polignac number, because 7229107690421 - 2²² = 7229103496117 is a prime.

It is a super-3 number, since 3×7229107690421³ (a number of 40 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7229107690421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7229107690471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3614553845210 + 3614553845211.

It is an arithmetic number, because the mean of its divisors is an integer number (3614553845211).

Almost surely, 2^{7229107690421} is an apocalyptic number.

It is an amenable number.

7229107690421 is a deficient number, since it is larger than the sum of its proper divisors (1).

7229107690421 is an equidigital number, since it uses as much as digits as its factorization.

7229107690421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 7229107690421 in words is "seven trillion, two hundred twenty-nine billion, one hundred seven million, six hundred ninety thousand, four hundred twenty-one".