611251212 has 192 divisors, whose sum is σ = 1767951360. Its totient is φ = 161817600.

The previous prime is 611251177. The next prime is 611251213. The reversal of 611251212 is 212152116.

It is not an unprimeable number, because it can be changed into a prime (611251213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3533158 + ... + 3533330.

It is an arithmetic number, because the mean of its divisors is an integer number (9208080).

Almost surely, 2^611251212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611251212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (883975680).

611251212 is an abundant number, since it is smaller than the sum of its proper divisors (1156700148).

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

611251212 is a wasteful number, since it uses less digits than its factorization.

611251212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 302 counting only the distinct ones).

The product of its digits is 240, while the sum is 21.

The square root of 611251212 is about 24723.4951412619. The cubic root of 611251212 is about 848.6720727544.

The spelling of 611251212 in words is "six hundred eleven million, two hundred fifty-one thousand, two hundred twelve".