3221214012 has 36 divisors (see below), whose sum is σ = 8158746960. Its totient is φ = 1071597312.

The previous prime is 3221213977. The next prime is 3221214041. The reversal of 3221214012 is 2104121223.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×3221214012² = 20752439422210272288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70837 + ... + 107052.

It is an arithmetic number, because the mean of its divisors is an integer number (226631860).

Almost surely, 2^3221214012 is an apocalyptic number.

It is an amenable number.

3221214012 is an abundant number, since it is smaller than the sum of its proper divisors (4937532948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3221214012 is a wasteful number, since it uses less digits than its factorization.

3221214012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178402 (or 178397 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3221214012 is about 56755.7399035551. The cubic root of 3221214012 is about 1476.8618086037.

Adding to 3221214012 its reverse (2104121223), we get a palindrome (5325335235).

The spelling of 3221214012 in words is "three billion, two hundred twenty-one million, two hundred fourteen thousand, twelve".