1201212222 has 64 divisors (see below), whose sum is σ = 2820096000. Its totient is φ = 334020960.

The previous prime is 1201212217. The next prime is 1201212253. The reversal of 1201212222 is 2222121021.

1201212222 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233029 + ... + 238127.

It is an arithmetic number, because the mean of its divisors is an integer number (44064000).

Almost surely, 2^1201212222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201212222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1410048000).

1201212222 is an abundant number, since it is smaller than the sum of its proper divisors (1618883778).

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

1201212222 is a wasteful number, since it uses less digits than its factorization.

1201212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5261.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1201212222 is about 34658.5086522776. The cubic root of 1201212222 is about 1063.0162760085.

Adding to 1201212222 its reverse (2222121021), we get a palindrome (3423333243).

The spelling of 1201212222 in words is "one billion, two hundred one million, two hundred twelve thousand, two hundred twenty-two".