3420121213 has 2 divisors, whose sum is σ = 3420121214. Its totient is φ = 3420121212.

The previous prime is 3420121189. The next prime is 3420121219. The reversal of 3420121213 is 3121210243.

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., 3396908089 + 23213124 = 58283^2 + 4818^2 .

It is a cyclic number.

It is not a de Polignac number, because 3420121213 - 2²¹ = 3418024061 is a prime.

It is a super-2 number, since 2×3420121213² = 23394458223225182738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3420121219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710060606 + 1710060607.

It is an arithmetic number, because the mean of its divisors is an integer number (1710060607).

Almost surely, 2^3420121213 is an apocalyptic number.

It is an amenable number.

3420121213 is a deficient number, since it is larger than the sum of its proper divisors (1).

3420121213 is an equidigital number, since it uses as much as digits as its factorization.

3420121213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 3420121213 is about 58481.8024089545. The cubic root of 3420121213 is about 1506.6550539857.

Adding to 3420121213 its reverse (3121210243), we get a palindrome (6541331456).

The spelling of 3420121213 in words is "three billion, four hundred twenty million, one hundred twenty-one thousand, two hundred thirteen".