701221212 has 72 divisors (see below), whose sum is σ = 1842540336. Its totient is φ = 233186688.

The previous prime is 701221207. The next prime is 701221249. The reversal of 701221212 is 212122107.

It is a happy number.

It is a super-2 number, since 2×701221212² = 983422376317497888, 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 23 ways as a sum of consecutive naturals, for example, 735328 + ... + 736280.

It is an arithmetic number, because the mean of its divisors is an integer number (25590838).

Almost surely, 2^701221212 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 701221212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (921270168).

701221212 is an abundant number, since it is smaller than the sum of its proper divisors (1141319124).

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

701221212 is a wasteful number, since it uses less digits than its factorization.

701221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729 (or 1715 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 701221212 is about 26480.5817911918. The cubic root of 701221212 is about 888.4200441563.

Adding to 701221212 its reverse (212122107), we get a palindrome (913343319).

It can be divided in two parts, 7012 and 21212, that added together give a square (28224 = 168²).

The spelling of 701221212 in words is "seven hundred one million, two hundred twenty-one thousand, two hundred twelve".