1243211102 has 16 divisors (see below), whose sum is σ = 2183200992. Its totient is φ = 519809280.

The previous prime is 1243211093. The next prime is 1243211117. The reversal of 1243211102 is 2011123421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1082363 + ... + 1083510.

It is an arithmetic number, because the mean of its divisors is an integer number (136450062).

Almost surely, 2^1243211102 is an apocalyptic number.

1243211102 is a deficient number, since it is larger than the sum of its proper divisors (939989890).

1243211102 is a wasteful number, since it uses less digits than its factorization.

1243211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165923.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1243211102 is about 35259.1988281073. The cubic root of 1243211102 is about 1075.2636388179.

Adding to 1243211102 its reverse (2011123421), we get a palindrome (3254334523).

The spelling of 1243211102 in words is "one billion, two hundred forty-three million, two hundred eleven thousand, one hundred two".