1212201102 has 128 divisors (see below), whose sum is σ = 3081600000. Its totient is φ = 316503936.

The previous prime is 1212201101. The next prime is 1212201103. The reversal of 1212201102 is 2011022121.

It is an interprime number because it is at equal distance from previous prime (1212201101) and next prime (1212201103).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212201101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1133424 + ... + 1134492.

It is an arithmetic number, because the mean of its divisors is an integer number (24075000).

Almost surely, 2^1212201102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212201102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1540800000).

1212201102 is an abundant number, since it is smaller than the sum of its proper divisors (1869398898).

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

1212201102 is a wasteful number, since it uses less digits than its factorization.

1212201102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1212201102 is about 34816.6785032691. The cubic root of 1212201102 is about 1066.2479883984.

Adding to 1212201102 its reverse (2011022121), we get a palindrome (3223223223).

The spelling of 1212201102 in words is "one billion, two hundred twelve million, two hundred one thousand, one hundred two".