12212021002 has 4 divisors (see below), whose sum is σ = 18318031506. Its totient is φ = 6106010500.

The previous prime is 12212020981. The next prime is 12212021071. The reversal of 12212021002 is 20012021221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6697621921 + 5514399081 = 81839^2 + 74259^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3053005249 + ... + 3053005252.

Almost surely, 2^12212021002 is an apocalyptic number.

12212021002 is a deficient number, since it is larger than the sum of its proper divisors (6106010504).

12212021002 is an equidigital number, since it uses as much as digits as its factorization.

12212021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6106010503.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12212021002 its reverse (20012021221), we get a palindrome (32224042223).

The spelling of 12212021002 in words is "twelve billion, two hundred twelve million, twenty-one thousand, two".