122051213 has 4 divisors (see below), whose sum is σ = 122191260. Its totient is φ = 121911168.

The previous prime is 122051207. The next prime is 122051263. The reversal of 122051213 is 312150221.

It is a happy number.

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 77668969 + 44382244 = 8813^2 + 6662^2 .

It is a cyclic number.

It is not a de Polignac number, because 122051213 - 2¹² = 122047117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122051191 and 122051200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122051203) 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, 68708 + ... + 70461.

It is an arithmetic number, because the mean of its divisors is an integer number (30547815).

Almost surely, 2^122051213 is an apocalyptic number.

It is an amenable number.

122051213 is a deficient number, since it is larger than the sum of its proper divisors (140047).

122051213 is an equidigital number, since it uses as much as digits as its factorization.

122051213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140046.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 122051213 is about 11047.6790775257. The cubic root of 122051213 is about 496.0369555473.

The spelling of 122051213 in words is "one hundred twenty-two million, fifty-one thousand, two hundred thirteen".