1202213121211 has 4 divisors (see below), whose sum is σ = 1204213476424. Its totient is φ = 1200212766000.

The previous prime is 1202213121139. The next prime is 1202213121233. The reversal of 1202213121211 is 1121213122021.

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

It is a cyclic number.

It is not a de Polignac number, because 1202213121211 - 2²⁵ = 1202179566779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1202213121251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000176705 + ... + 1000177906.

It is an arithmetic number, because the mean of its divisors is an integer number (301053369106).

Almost surely, 2^{1202213121211} is an apocalyptic number.

1202213121211 is a deficient number, since it is larger than the sum of its proper divisors (2000355213).

1202213121211 is an equidigital number, since it uses as much as digits as its factorization.

1202213121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000355212.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1202213121211 its reverse (1121213122021), we get a palindrome (2323426243232).

The spelling of 1202213121211 in words is "one trillion, two hundred two billion, two hundred thirteen million, one hundred twenty-one thousand, two hundred eleven".