1202212221100 has 36 divisors (see below), whose sum is σ = 2845964206008. Its totient is φ = 437168080000.

The previous prime is 1202212221073. The next prime is 1202212221101. The reversal of 1202212221100 is 11222122021.

It is a happy 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 11 ways as a sum of consecutive naturals, for example, 546459001 + ... + 546461200.

It is an arithmetic number, because the mean of its divisors is an integer number (79054561278).

Almost surely, 2^{1202212221100} is an apocalyptic number.

1202212221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202212221100 is an abundant number, since it is smaller than the sum of its proper divisors (1643751984908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1202212221100 is a wasteful number, since it uses less digits than its factorization.

1202212221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092920226 (or 1092920219 counting only the distinct ones).

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

Adding to 1202212221100 its reverse (11222122021), we get a palindrome (1213434343121).

The spelling of 1202212221100 in words is "one trillion, two hundred two billion, two hundred twelve million, two hundred twenty-one thousand, one hundred".