1211121202 has 16 divisors (see below), whose sum is σ = 1849312800. Its totient is φ = 594704160.

The previous prime is 1211121193. The next prime is 1211121209. The reversal of 1211121202 is 2021211121.

It is not an unprimeable number, because it can be changed into a prime (1211121209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128677 + ... + 137767.

It is an arithmetic number, because the mean of its divisors is an integer number (115582050).

Almost surely, 2^1211121202 is an apocalyptic number.

1211121202 is a deficient number, since it is larger than the sum of its proper divisors (638191598).

1211121202 is a wasteful number, since it uses less digits than its factorization.

1211121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10281.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1211121202 is about 34801.1666758458. The cubic root of 1211121202 is about 1065.9312688668.

Adding to 1211121202 its reverse (2021211121), we get a palindrome (3232332323).

It can be divided in two parts, 1211121 and 202, that multiplied together give a palindrome (244646442).

The spelling of 1211121202 in words is "one billion, two hundred eleven million, one hundred twenty-one thousand, two hundred two".