3321210157 has 2 divisors, whose sum is σ = 3321210158. Its totient is φ = 3321210156.

The previous prime is 3321210121. The next prime is 3321210187. The reversal of 3321210157 is 7510121233.

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., 3318451236 + 2758921 = 57606^2 + 1661^2 .

It is an emirp because it is prime and its reverse (7510121233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3321210157 - 2⁷ = 3321210029 is a prime.

It is a super-2 number, since 2×3321210157² = 22060873813919929298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3321210187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1660605078 + 1660605079.

It is an arithmetic number, because the mean of its divisors is an integer number (1660605079).

Almost surely, 2^3321210157 is an apocalyptic number.

It is an amenable number.

3321210157 is a deficient number, since it is larger than the sum of its proper divisors (1).

3321210157 is an equidigital number, since it uses as much as digits as its factorization.

3321210157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 3321210157 is about 57629.9414974543. The cubic root of 3321210157 is about 1491.9884202790.

The spelling of 3321210157 in words is "three billion, three hundred twenty-one million, two hundred ten thousand, one hundred fifty-seven".