3221100121 has 4 divisors (see below), whose sum is σ = 3222663552. Its totient is φ = 3219536692.

The previous prime is 3221100019. The next prime is 3221100131. The reversal of 3221100121 is 1210011223.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1210011223 = 67 ⋅18059869.

It is a cyclic number.

It is not a de Polignac number, because 3221100121 - 2¹¹ = 3221098073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3221100131) 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, 778621 + ... + 782746.

It is an arithmetic number, because the mean of its divisors is an integer number (805665888).

Almost surely, 2^3221100121 is an apocalyptic number.

It is an amenable number.

3221100121 is a deficient number, since it is larger than the sum of its proper divisors (1563431).

3221100121 is a wasteful number, since it uses less digits than its factorization.

3221100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563430.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 3221100121 is about 56754.7365512342. The cubic root of 3221100121 is about 1476.8444028213.

Adding to 3221100121 its reverse (1210011223), we get a palindrome (4431111344).

The spelling of 3221100121 in words is "three billion, two hundred twenty-one million, one hundred thousand, one hundred twenty-one".