70222212 has 18 divisors (see below), whose sum is σ = 177506238. Its totient is φ = 23407392.

The previous prime is 70222211. The next prime is 70222247. The reversal of 70222212 is 21222207.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 45481536 + 24740676 = 6744^2 + 4974^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is not an unprimeable number, because it can be changed into a prime (70222211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 975273 + ... + 975344.

Almost surely, 2^70222212 is an apocalyptic number.

It is an amenable number.

70222212 is an abundant number, since it is smaller than the sum of its proper divisors (107284026).

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

70222212 is a wasteful number, since it uses less digits than its factorization.

70222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950627 (or 1950622 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 70222212 is about 8379.8694500571. The cubic root of 70222212 is about 412.5641641235.

Adding to 70222212 its reverse (21222207), we get a palindrome (91444419).

The spelling of 70222212 in words is "seventy million, two hundred twenty-two thousand, two hundred twelve".