1212222022202 has 4 divisors (see below), whose sum is σ = 1818333033306. Its totient is φ = 606111011100.

The previous prime is 1212222022183. The next prime is 1212222022229. The reversal of 1212222022202 is 2022202222121.

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., 638626337881 + 573595684321 = 799141^2 + 757361^2 .

It is a super-2 number, since 2×1212222022202² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303055505549 + ... + 303055505552.

Almost surely, 2^{1212222022202} is an apocalyptic number.

1212222022202 is a deficient number, since it is larger than the sum of its proper divisors (606111011104).

1212222022202 is an equidigital number, since it uses as much as digits as its factorization.

1212222022202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606111011103.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 1212222022202 its reverse (2022202222121), we get a palindrome (3234424244323).

The spelling of 1212222022202 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, twenty-two thousand, two hundred two".