7122119021 has 2 divisors, whose sum is σ = 7122119022. Its totient is φ = 7122119020.

The previous prime is 7122118987. The next prime is 7122119033. The reversal of 7122119021 is 1209112217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6814502500 + 307616521 = 82550^2 + 17539^2 .

It is a cyclic number.

It is not a de Polignac number, because 7122119021 - 2⁶ = 7122118957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7122116021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3561059510 + 3561059511.

It is an arithmetic number, because the mean of its divisors is an integer number (3561059511).

Almost surely, 2^7122119021 is an apocalyptic number.

It is an amenable number.

7122119021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7122119021 is an equidigital number, since it uses as much as digits as its factorization.

7122119021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 7122119021 is about 84392.6479084523. The cubic root of 7122119021 is about 1923.9911750964.

The spelling of 7122119021 in words is "seven billion, one hundred twenty-two million, one hundred nineteen thousand, twenty-one".