3121401212 has 12 divisors (see below), whose sum is σ = 5783772960. Its totient is φ = 1468894656.

The previous prime is 3121401211. The next prime is 3121401221. The reversal of 3121401212 is 2121041213.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121401211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22951412 + ... + 22951547.

It is an arithmetic number, because the mean of its divisors is an integer number (481981080).

Almost surely, 2^3121401212 is an apocalyptic number.

It is an amenable number.

3121401212 is a deficient number, since it is larger than the sum of its proper divisors (2662371748).

3121401212 is a wasteful number, since it uses less digits than its factorization.

3121401212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45902980 (or 45902978 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 3121401212 is about 55869.5016265583. The cubic root of 3121401212 is about 1461.4474311344.

Adding to 3121401212 its reverse (2121041213), we get a palindrome (5242442425).

The spelling of 3121401212 in words is "three billion, one hundred twenty-one million, four hundred one thousand, two hundred twelve".