1211202022102 has 4 divisors (see below), whose sum is σ = 1816803033156. Its totient is φ = 605601011050.

The previous prime is 1211202022097. The next prime is 1211202022103. The reversal of 1211202022102 is 2012202021121.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211202022103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302800505524 + ... + 302800505527.

It is an arithmetic number, because the mean of its divisors is an integer number (454200758289).

Almost surely, 2^{1211202022102} is an apocalyptic number.

1211202022102 is a deficient number, since it is larger than the sum of its proper divisors (605601011054).

1211202022102 is an equidigital number, since it uses as much as digits as its factorization.

1211202022102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605601011053.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1211202022102 its reverse (2012202021121), we get a palindrome (3223404043223).

The spelling of 1211202022102 in words is "one trillion, two hundred eleven billion, two hundred two million, twenty-two thousand, one hundred two".