1202212221111 has 18 divisors (see below), whose sum is σ = 1908746494200. Its totient is φ = 728613466680.

The previous prime is 1202212221109. The next prime is 1202212221131. The reversal of 1202212221111 is 1111222122021.

1202212221111 is a `hidden beast` number, since 120 + 2 + 212 + 221 + 111 = 666.

It is not a de Polignac number, because 1202212221111 - 2¹ = 1202212221109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202212221101) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 551978811 + ... + 551980988.

It is an arithmetic number, because the mean of its divisors is an integer number (106041471900).

Almost surely, 2^{1202212221111} is an apocalyptic number.

1202212221111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1202212221111 is a deficient number, since it is larger than the sum of its proper divisors (706534273089).

1202212221111 is a wasteful number, since it uses less digits than its factorization.

1202212221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103959827 (or 1103959813 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1202212221111 its reverse (1111222122021), we get a palindrome (2313434343132).

The spelling of 1202212221111 in words is "one trillion, two hundred two billion, two hundred twelve million, two hundred twenty-one thousand, one hundred eleven".