1212213332 has 36 divisors (see below), whose sum is σ = 2342153940. Its totient is φ = 548549760.

The previous prime is 1212213313. The next prime is 1212213337. The reversal of 1212213332 is 2333122121.

It can be written as a sum of positive squares in 2 ways, for example, as 1144874896 + 67338436 = 33836^2 + 8206^2 .

It is a super-2 number, since 2×1212213332² = 2938922324557084448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212213337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105368 + ... + 116304.

Almost surely, 2^1212213332 is an apocalyptic number.

It is an amenable number.

1212213332 is a deficient number, since it is larger than the sum of its proper divisors (1129940608).

1212213332 is a wasteful number, since it uses less digits than its factorization.

1212213332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11192 (or 11179 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 1212213332 is about 34816.8541370412. The cubic root of 1212213332 is about 1066.2515742086.

Adding to 1212213332 its reverse (2333122121), we get a palindrome (3545335453).

The spelling of 1212213332 in words is "one billion, two hundred twelve million, two hundred thirteen thousand, three hundred thirty-two".