122077213 has 4 divisors (see below), whose sum is σ = 125054748. Its totient is φ = 119099680.

The previous prime is 122077181. The next prime is 122077279. The reversal of 122077213 is 312770221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312770221 = 149 ⋅2099129.

It can be written as a sum of positive squares in 2 ways, for example, as 54804409 + 67272804 = 7403^2 + 8202^2 .

It is a cyclic number.

It is not a de Polignac number, because 122077213 - 2⁵ = 122077181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122077013) 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, 1488706 + ... + 1488787.

It is an arithmetic number, because the mean of its divisors is an integer number (31263687).

Almost surely, 2^122077213 is an apocalyptic number.

It is an amenable number.

122077213 is a deficient number, since it is larger than the sum of its proper divisors (2977535).

122077213 is an equidigital number, since it uses as much as digits as its factorization.

122077213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977534.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 122077213 is about 11048.8557326087. The cubic root of 122077213 is about 496.0721758586.

The spelling of 122077213 in words is "one hundred twenty-two million, seventy-seven thousand, two hundred thirteen".