34212491221 has 2 divisors, whose sum is σ = 34212491222. Its totient is φ = 34212491220.

The previous prime is 34212491207. The next prime is 34212491273. The reversal of 34212491221 is 12219421243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34136627121 + 75864100 = 184761^2 + 8710^2 .

It is a cyclic number.

It is not a de Polignac number, because 34212491221 - 2¹³ = 34212483029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34212401221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17106245610 + 17106245611.

It is an arithmetic number, because the mean of its divisors is an integer number (17106245611).

Almost surely, 2^34212491221 is an apocalyptic number.

It is an amenable number.

34212491221 is a deficient number, since it is larger than the sum of its proper divisors (1).

34212491221 is an equidigital number, since it uses as much as digits as its factorization.

34212491221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The spelling of 34212491221 in words is "thirty-four billion, two hundred twelve million, four hundred ninety-one thousand, two hundred twenty-one".