1213112022202 has 4 divisors (see below), whose sum is σ = 1819668033306. Its totient is φ = 606556011100.

The previous prime is 1213112022181. The next prime is 1213112022229. The reversal of 1213112022202 is 2022202113121.

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., 1143806721121 + 69305301081 = 1069489^2 + 263259^2 .

It is a super-2 number, since 2×1213112022202² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1213112022202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303278005549 + ... + 303278005552.

Almost surely, 2^{1213112022202} is an apocalyptic number.

1213112022202 is a deficient number, since it is larger than the sum of its proper divisors (606556011104).

1213112022202 is an equidigital number, since it uses as much as digits as its factorization.

1213112022202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606556011103.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1213112022202 its reverse (2022202113121), we get a palindrome (3235314135323).

The spelling of 1213112022202 in words is "one trillion, two hundred thirteen billion, one hundred twelve million, twenty-two thousand, two hundred two".